14-letter words with O in the middle
Delve into the fascinating world of words where the letter O is nestled in the middle. This section highlights the unique placement of O in various words, illustrating how it contributes to their sound and meaning. From everyday language to more unusual terms, discover how O in the middle shapes the essence of these words.
| Word | Points | Definition | Sentence example |
|---|---|---|---|
| responsibility | 21 | a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct | he holds a position of great responsibility |
| administration | 17 | the persons (or committees or departments etc.) who make up a body for the purpose of administering something | he claims that the present administration is corrupt |
| communications | 22 | the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.) | communications is his major field of study |
| identification | 20 | the act of designating or identifying something | - |
| transportation | 16 | the act of expelling a person from their native land | the sentence was one of transportation for life |
| disappointment | 21 | a feeling of dissatisfaction that results when your expectations are not realized | his hopes were so high he was doomed to disappointment |
| recommendation | 21 | any quality or characteristic that gains a person a favorable reception or acceptance or admission | her pleasant personality is already a recommendation |
| transformation | 19 | the act of changing in form or shape or appearance | - |
| interpretation | 16 | an explanation of something that is not immediately obvious | the edict was subject to many interpretations |
| simultaneously | 19 | at the same instant | they spoke simultaneously |
| representation | 16 | a presentation to the mind in the form of an idea or image | - |
| rehabilitation | 19 | the conversion of wasteland into land suitable for use of habitation or cultivation | - |
| professionally | 22 | in a professional manner | professionally trained staff |
| discrimination | 19 | the cognitive process whereby two or more stimuli are distinguished | - |
| constitutional | 16 | existing as an essential constituent or characteristic | a constitutional inability to tell the truth |
| correspondence | 21 | (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane | - |
| reconstruction | 18 | recall that is hypothesized to work by storing abstract features which are then used to construct the memory during recall | - |
| reconciliation | 18 | the reestablishing of cordial relations | - |
| reconnaissance | 18 | the act of reconnoitring (especially to gain information about an enemy or potential enemy) | an exchange of fire occurred on a reconnaissance mission |
| unprofessional | 19 | not characteristic of or befitting a profession or one engaged in a profession | described in unprofessional language so that high school students could understand it |
| hypothetically | 30 | by hypothesis | - |
| congratulation | 17 | (usually plural) an expression of pleasure at the success or good fortune of another | I sent them my sincere congratulations on their marriage |
| claustrophobic | 25 | suffering from claustrophobia; abnormally afraid of closed-in places | - |
| accomplishment | 27 | an ability that has been acquired by training | - |
| cinematography | 27 | the act of making a film | - |
| slaughterhouse | 21 | a building where animals are butchered | - |
| uncontrollable | 18 | incapable of being controlled | - |
| archaeological | 22 | related to or dealing with or devoted to archaeology | an archaeological dig |
| psychoanalysis | 27 | a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud | his physician recommended psychoanalysis |
| unconventional | 19 | not conforming to legality, moral law, or social convention | an unconventional marriage |
| coincidentally | 22 | happening at the same time | - |
| sophistication | 21 | a deliberately invalid argument displaying ingenuity in reasoning in the hope of deceiving someone | - |
| anthropologist | 20 | a social scientist who specializes in anthropology | - |
| metaphorically | 26 | in a metaphorical manner | she expressed herself metaphorically |
| implementation | 20 | the act of accomplishing some aim or executing some order | the agency was created for the implementation of the policy |
| classification | 21 | the act of distributing things into classes or categories of the same type | - |
| congratulating | 18 | - | - |
| affectionately | 25 | with affection | he treats her affectionately |
| uncompromising | 23 | not making concessions | took an uncompromising stance in the peace talks |
| wholeheartedly | 27 | without reserve; without reservation | he adopted wholeheartedly some of the policies that he had previously criticized |
| groundbreaking | 23 | the ceremonial breaking of the ground to formally begin a construction project | - |
| disorientation | 15 | a wild delusion (especially one induced by a hallucinogenic drug) | - |
| subconsciously | 23 | from the subconscious mind | the image came to him subconsciously |
| electronically | 21 | by electronic means | the door opens electronically |
| multiplication | 20 | the act of producing offspring or multiplying by such production | - |
| inconvenienced | 22 | - | - |
| impressionable | 20 | easily impressed or influenced | an impressionable youngster |
| interconnected | 19 | reciprocally connected | - |
| accountability | 23 | responsibility to someone or for some activity | - |
| malfunctioning | 22 | not performing or able to perform its regular function | a malfunctioning valve |
| claustrophobia | 23 | a morbid fear of being closed in a confined space | - |
| philanthropist | 24 | someone who makes charitable donations intended to increase human well-being | - |
| democratically | 24 | in a democratic manner; based on democratic principles | it was decided democratically |
| disintegration | 16 | in a decomposed state | - |
| uncontrollably | 21 | in an uncontrolled manner | she laughed uncontrollably |
| cardiovascular | 22 | of or pertaining to or involving the heart and blood vessels | cardiovascular conditioning |
| excommunicated | 30 | - | - |
| contemporaries | 20 | all the people living at the same time or of approximately the same age | - |
| unrecognizable | 28 | defying recognition as e.g. because of damage or alteration | - |
| underdeveloped | 22 | relating to societies in which capital needed to industrialize is in short supply | - |
| revolutionized | 27 | - | - |
| extraordinaire | 22 | extraordinary in a particular capacity | a woodworker extraordinaire |
| meteorological | 19 | of or pertaining to atmospheric phenomena, especially weather and weather conditions | meteorological factors |
| miscalculation | 20 | a mistake in calculating | - |
| geographically | 26 | with respect to geography | they are geographically closer to the center of town |
| unconscionable | 20 | greatly exceeding bounds of reason or moderation | unconscionable spending |
| nanotechnology | 23 | the branch of engineering that deals with things smaller than 100 nanometers (especially with the manipulation of individual molecules) | - |
| hallucinogenic | 22 | capable of producing hallucinations | LSD is a powerful hallucinogenic drug |
| unquestionably | 28 | without question and beyond doubt | - |
| comprehensible | 25 | capable of being comprehended or understood | an idea comprehensible to the average mind |
| specialization | 27 | the act of specializing; making something suitable for a special purpose | - |
| incompleteness | 20 | the state of being crude and incomplete and imperfect | the study was criticized for incompleteness of data but it stimulated further research |
| insurmountable | 18 | impossible to surmount | - |
| aforementioned | 20 | being the one previously mentioned or spoken of | works of all the aforementioned authors |
| cardiomyopathy | 30 | a disorder (usually of unknown origin) of the heart muscle (myocardium) | - |
| counterculture | 18 | a culture with lifestyles and values opposed to those of the established culture | - |
| mountaineering | 17 | the activity of climbing a mountain | - |
| photosynthesis | 25 | synthesis of compounds with the aid of radiant energy (especially in plants) | - |
| reconstructive | 21 | helping to restore to good condition | reconstructive surgery |
| redistribution | 17 | distributing again | the revolution resulted in a redistribution of wealth |
| astrophysicist | 24 | an astronomer who studies the physical properties of celestial bodies | - |
| transformative | 22 | - | - |
| unquestionable | 25 | not counterfeit or copied | an unquestionable antique |
| unsatisfactory | 22 | not giving satisfaction | shops should take back unsatisfactory goods |
| schoolchildren | 25 | - | - |
| indoctrination | 17 | teaching someone to accept doctrines uncritically | - |
| deconstruction | 19 | a philosophical theory of criticism (usually of literature or film) that seeks to expose deep-seated contradictions in a work by delving below its surface meaning | - |
| confidentially | 23 | in a confidential manner | spoke to him intimately and confidentially |
| thoughtfulness | 24 | kind and considerate regard for others | - |
| pathologically | 25 | with respect to pathology | pathologically interesting results |
| reorganization | 24 | the imposition of a new organization; organizing differently (often involving extensive and drastic changes) | a committee was appointed to oversee the reorganization of the curriculum |
| thermodynamics | 27 | the branch of physics concerned with the conversion of different forms of energy | - |
| paleontologist | 17 | a specialist in paleontology | - |
| electrotherapy | 24 | the therapeutic application of electricity to the body (as in the treatment of various forms of paralysis) | - |
| congratulatory | 20 | expressive of sympathetic pleasure or joy on account of someone's success or good fortune | a congratulatory telegram |
| undernourished | 19 | not getting adequate food | badly undernourished |
| nitroglycerine | 20 | a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat) | - |
| philosophizing | 34 | the exposition (often superficially) of a particular philosophy | - |
| proportionally | 21 | to a proportionate degree | - |
| capitalization | 27 | the sale of capital stock | - |
| conversational | 19 | characteristic of informal spoken language or conversation | the broken syntax and casual enunciation of conversational English |
| acknowledgment | 27 | a short note recognizing a source of information or of a quoted passage | the acknowledgments are usually printed at the front of a book |
| unmentionables | 18 | - | - |
| misinformation | 21 | information that is incorrect | - |
| parapsychology | 30 | phenomena that appear to contradict physical laws and suggest the possibility of causation by mental processes | - |
| psychoanalytic | 29 | of or relating to or incorporating the methods and theory of psychiatric treatment originated by Sigmund Freud | Freud's psychoanalytical theories |
| predisposition | 19 | susceptibility to a pathogen | - |
| teleconference | 21 | a conference of people who are in different locations that is made possible by the use of such telecommunications equipment as closed-circuit television | - |
| tetragrammaton | 19 | four Hebrew letters usually transliterated as YHWH (Yahweh) or JHVH (Jehovah) signifying the Hebrew name for God which the Jews regarded as too holy to pronounce | - |
| fraternization | 26 | associating with others in a brotherly or friendly way; especially with an enemy | - |
| conservatively | 25 | in a conservative manner | we estimated the number of demonstrators conservatively at 200,000. |
| phosphorescent | 26 | emitting light without appreciable heat as by slow oxidation of phosphorous | the phosphorescent glow of decaying wood |
| revolutionised | 18 | - | - |
| discriminatory | 22 | containing or implying a slight or showing prejudice | discriminatory attitudes and practices |
| detoxification | 27 | a treatment for addiction to drugs or alcohol intended to remove the physiological effects of the addictive substances | - |
| conventionally | 22 | in a conventional manner | he usually behaves rather conventionally |
| transmigration | 17 | the passing of a soul into another body after death | - |
| predestination | 17 | (theology) being determined in advance; especially the doctrine (usually associated with Calvin) that God has foreordained every event throughout eternity (including the final salvation of mankind) | - |
| irreconcilable | 20 | impossible to reconcile | irreconcilable differences |
| authentication | 19 | a mark on an article of trade to indicate its origin and authenticity | - |
| countermeasure | 18 | an action taken to offset another action | - |
| exsanguination | 22 | - | - |
| gynaecological | 23 | of or relating to or practicing gynecology | - |
| generalization | 24 | the process of formulating general concepts by abstracting common properties of instances | - |
| counterbalance | 20 | contrast with equal weight or force | - |
| conjunctivitis | 28 | inflammation of the conjunctiva of the eye | - |
| microbiologist | 21 | a specialist in microbiology | - |
| satisfactorily | 22 | in a satisfactory manner | - |
| denominational | 17 | adhering or confined to a particular sect or denomination | denominational prejudice |
| disinformation | 20 | misinformation that is deliberately disseminated in order to influence or confuse rivals (foreign enemies or business competitors etc.) | - |
| traditionalist | 15 | one who adheres to traditional views | - |
| licentiousness | 16 | dissolute indulgence in sensual pleasure | - |
| liberalization | 25 | the act of making less strict | - |
| microprocessor | 22 | integrated circuit semiconductor chip that performs the bulk of the processing and controls the parts of a system | a microprocessor functions as the central processing unit of a microcomputer |
| reconstitution | 16 | - | - |
| rebelliousness | 16 | intentionally contemptuous behavior or attitude | - |
| sensationalism | 16 | the journalistic use of subject matter that appeals to vulgar tastes | the tabloids relied on sensationalism to maintain their circulation |
| decontaminated | 20 | - | - |
| commercialized | 32 | organized principally for financial gain | Christmas has become a commercialized spectacle |
| mistranslation | 16 | an incorrect translation | - |
| metempsychosis | 28 | after death the soul begins a new cycle of existence in another human body | - |
| sociologically | 22 | with regard to sociology | sociologically speaking, this is an interesting phenomenon |
| indoctrinating | 18 | - | - |
| jurisdictional | 24 | restricted to the geographic area under a particular jurisdiction | the jurisdictional limits of a state |
| arrondissement | 17 | - | - |
| beautification | 21 | the act of making something more beautiful | - |
| benzodiazepine | 37 | any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency | - |
| geosynchronous | 23 | of or having an orbit with a fixed period of 24 hours (although the position in the orbit may not be fixed with respect to the earth) | - |
| unapproachable | 25 | inaccessibly located or situated | an unapproachable chalet high in the mountains |
| nonthreatening | 18 | - | - |
| naturalisation | 14 | changing the pronunciation of a borrowed word to agree with the borrowers' phonology | - |
| photosensitive | 22 | sensitive to visible light | - |
| reasonableness | 16 | the state of having good sense and sound judgment | - |
| schoolmistress | 21 | a woman schoolteacher (especially one regarded as strict) | - |
| staphylococcus | 28 | spherical Gram-positive parasitic bacteria that tend to form irregular colonies; some cause boils or septicemia or infections | - |
| inconveniently | 22 | in an inconvenient manner | he arrived at an inconveniently late hour |
| bioluminescent | 20 | (of living organisms) emitting light | fireflies are bioluminescent |
| desalinization | 24 | the removal of salt (especially from sea water) | - |
| diplomatically | 24 | with diplomacy; in a diplomatic manner | he answered very diplomatically |
| dimensionality | 20 | the spatial property of having dimensions | all matter has dimensionality |
| voluptuousness | 19 | the quality of having a well-rounded body | - |
| fortunetelling | 18 | the practice of predicting people's futures (usually for payment) | - |
| mesdemoiselles | 19 | - | - |
| militarization | 25 | act of assembling and putting into readiness for war or other emergency: | - |
| neutralization | 23 | (euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation) | - |
| neuroscientist | 16 | a neurobiologist who specializes in the study of the brain | - |
| possessiveness | 19 | excessive desire to possess or dominate | - |
| propagandistic | 22 | of or relating to or characterized by propaganda | - |
| ridiculousness | 17 | a message whose content is at variance with reason | - |
| simplification | 23 | the act of reducing complexity | - |
| stratification | 19 | the condition of being arranged in social strata or classes within a group | - |
| irreproachable | 23 | free of guilt; not subject to blame | of irreproachable character |
| demobilization | 28 | act of changing from a war basis to a peace basis including disbanding or discharging troops | demobilization of factories |
| editorializing | 25 | - | - |
| expressionless | 23 | deliberately impassive in manner | his face remained expressionless as the verdict was read |
| horticulturist | 19 | an expert in the science of cultivating plants (fruit or flowers or vegetables or ornamental plants) | - |
| convertibility | 24 | the quality of being exchangeable (especially the ability to convert a currency into gold or other currencies without restriction) | - |
| constructively | 24 | in a constructive manner | it is my task to look critically and constructively at the flaws and the failures |
| conglomeration | 19 | a rounded spherical form | - |
| unacknowledged | 26 | not openly acknowledged | an unacknowledged emergency |
| unaccomplished | 26 | - | - |
| unrecognisable | 19 | defying recognition as e.g. because of damage or alteration | - |
| lasciviousness | 19 | feeling morbid sexual desire or a propensity to lewdness | - |
| naturalization | 23 | changing the pronunciation of a borrowed word to agree with the borrowers' phonology | the naturalization in English of many Italian words |
| pharmacologist | 24 | someone trained in the science of drugs (their composition and uses and effects) | - |
| revitalization | 26 | bringing again into activity and prominence | - |
| reorganisation | 15 | the imposition of a new organization; organizing differently (often involving extensive and drastic changes) | - |
| responsiveness | 19 | responsive to stimulation | - |
| spectrographic | 26 | relating to or employing a spectrograph | - |
| solidification | 20 | the process of becoming hard or solid by cooling or drying or crystallization | - |
| inconsiderable | 19 | too small or unimportant to merit attention | passed his life in an inconsiderable village |
| incapacitation | 20 | - | - |
| impoverishment | 26 | the state of having little or no money and few or no material possessions | - |
| astronomically | 21 | enormously | the bill was astronomically high |
| capriciousness | 20 | the trait of acting unpredictably and more from whim or caprice than from reason or judgment | - |
| denazification | 29 | social process of removing Nazis from official positions and giving up any allegiance to Nazism | denazification was a slow process |
| dehumanization | 29 | the act of degrading people with respect to their best qualities | science has been blamed for the dehumanization of modern life |
| discouragement | 20 | the feeling of despair in the face of obstacles | - |
| disillusioning | 16 | freeing from illusion or false belief | - |
| encephalopathy | 29 | any disorder or disease of the brain | - |
| extemporaneous | 25 | with little or no preparation or forethought | an extemporaneous piano recital |
| generalisation | 15 | the process of formulating general concepts by abstracting common properties of instances | - |
| gentrification | 20 | the restoration of run-down urban areas by the middle class (resulting in the displacement of low-income residents) | - |
| hermaphroditic | 27 | of animal or plant; having both male female reproductive organs | - |
| conspiratorial | 18 | relating to or characteristic of conspiracy or conspirators | a conspiratorial whisper |
| transmogrified | 21 | - | - |
| unidirectional | 17 | operating or moving or allowing movement in one direction only | a unidirectional flow |
| unsynchronized | 32 | not occurring together | - |
| uncontaminated | 19 | free from admixture with noxious elements; clean | - |
| unconvincingly | 25 | in an unconvincing manner | he argued unconvincingly |
| northeasterner | 17 | - | - |
| macroeconomics | 24 | the branch of economics that studies the overall working of a national economy | - |
| nontraditional | 15 | not conforming to or in accord with tradition | nontraditional designs |
| neighborliness | 20 | a disposition to be friendly and helpful to neighbors | - |
| mysteriousness | 19 | - | - |
| neurobiologist | 17 | a specialist in neurobiology | - |
| neuropathology | 23 | - | - |
| philosophising | 25 | - | - |
| precariousness | 18 | being unsettled or in doubt or dependent on chance | the precariousness of his income |
| popularization | 27 | the act of making something attractive to the general public | - |
| photosynthetic | 27 | relating to or using or formed by photosynthesis | - |
| prosthodontist | 20 | a dentist who is expert in prosthodontics | - |
| pressurization | 25 | - | - |
| staphylococcal | 28 | of or relating to the staphylococcus bacteria | a staphylococcal infection |
| telephonically | 24 | - | - |
| superannuation | 16 | the property of being out of date and not current | - |
| knickerbockers | 32 | (used in the plural) trousers ending above the knee | - |
| astrologically | 20 | - | - |
| antigovernment | 20 | - | - |
| businesspeople | 20 | people who transact business (especially business executives) | - |
| decompensation | 21 | - | - |
| decolonization | 26 | the action of changing from colonial to independent status | - |
| discolouration | 17 | a soiled or discolored appearance | - |
| disembowelment | 24 | the act of removing the bowels or viscera; the act of cutting so as to cause the viscera to protrude | - |
| electioneering | 17 | persuasion of voters in a political campaign | - |
| echocardiogram | 25 | a graphical image of the heart produced by an echocardiograph | - |
| fraternisation | 17 | associating with others in a brotherly or friendly way; especially with an enemy | - |
| hydrotherapist | 26 | - | - |
| circumlocution | 22 | a style that involves indirect ways of expressing things | - |
| chromatography | 30 | a process used for separating mixtures by virtue of differences in absorbency | - |
| chlorpromazine | 32 | a drug (trade name Thorazine) derived from phenothiazine that has antipsychotic effects and is used as a sedative and tranquilizer | - |
| conceptualized | 30 | - | - |
| conservatorium | 21 | - | - |
| ambassadorship | 24 | the post of ambassador | - |
| adenocarcinoma | 21 | malignant tumor originating in glandular epithelium | - |
| unproportioned | 19 | - | - |
| uncorroborated | 19 | unsupported by other evidence | - |
| megalomaniacal | 21 | suffering from megalomania | - |
| lateralization | 23 | localization of function on either the right or left sides of the brain | - |
| legitimization | 26 | - | - |
| meticulousness | 18 | strict attention to minute details | - |
| nymphomaniacal | 28 | (used of women) affected with excessive sexual desire | - |
| noncommutative | 23 | - | - |
| proprioceptive | 25 | of or relating to proprioception | - |
| preposterously | 21 | so as to arouse or deserve laughter | - |
| proceleusmatic | 22 | - | - |
| procrastinated | 19 | - | - |
| reconfirmation | 21 | - | - |
| saponification | 21 | a chemical reaction in which an ester is heated with an alkali (especially the alkaline hydrolysis of a fat or oil to make soap) | - |
| sanctification | 21 | a religious ceremony in which something is made holy | - |
| specialisation | 18 | the act of specializing; making something suitable for a special purpose | - |
| servomechanism | 26 | control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system | - |
| sensationalist | 14 | someone who uses exaggerated or lurid material in order to gain public attention | - |
| substantiation | 16 | the act of validating; finding or testing the truth of something | - |
| stigmatization | 26 | the act of stigmatizing | - |
| initialization | 23 | (computer science) the format of sectors on the surface of a hard disk drive so that the operating system can access them and setting a starting position | - |
| immunoglobulin | 21 | a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response | - |
| irrevocability | 24 | - | - |
| anesthesiology | 21 | the branch of medical science that studies and applies anesthetics | - |
| capitalisation | 18 | the sale of capital stock | - |
| autosuggestion | 16 | a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s | - |
| bioelectricity | 23 | electric phenomena in animals or plants | - |
| bioengineering | 18 | the branch of engineering science in which biological science is used to study the relation between workers and their environments | - |
| denationalized | 25 | - | - |
| discontentment | 19 | a longing for something better than the present situation | - |
| directionality | 20 | the property of a microphone or antenna of being more sensitive in one direction than in another | - |
| disapprovingly | 26 | showing disapproval | he shook his head disapprovingly |
| disimpassioned | 20 | - | - |
| disembarkation | 23 | the act of passengers and crew getting off of a ship or aircraft | - |
| depersonalized | 27 | - | - |
| dermatological | 20 | of or relating to or practicing dermatology | - |
| effortlessness | 20 | the quality of requiring little effort | such effortlessness is achieved only after hours of practice |
| diverticulosis | 20 | presence of multiple diverticula in the walls of the colon | - |
| fastidiousness | 18 | the trait of being meticulous about matters of taste or style | neatness and fastidiousness of dress |
| federalization | 27 | the state of being under federal control | the federalization of postal service |
| ethnologically | 23 | - | - |
| etymologically | 25 | - | - |
| gregariousness | 16 | the quality of being gregarious--having a dislike of being alone | - |
| forthrightness | 24 | the quality of being honest and straightforward in attitude and speech | - |
| hippopotamuses | 25 | - | - |
| hydrocortisone | 23 | an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism | - |
| historiography | 26 | a body of historical literature | - |
| circumspection | 24 | the trait of being circumspect and prudent | - |
| chemosynthetic | 29 | - | - |
| coquettishness | 28 | - | - |
| constructivism | 23 | an abstractionist artistic movement in Russia after World War I; industrial materials were used to construct nonrepresentational objects | - |
| congregational | 18 | of or pertaining to or characteristic of a Congregational church | - |
| troubleshooter | 19 | a worker whose job is to locate and fix sources of trouble (especially in mechanical devices) | - |
| traditionalism | 17 | strict adherence to traditional methods or teachings | - |
| unsurmountable | 18 | incapable of being surmounted or climbed | - |
| unconscionably | 23 | - | - |
| unconstructive | 21 | not constructive | - |
| undomesticated | 20 | not domesticated | a few undomesticated horses left |
| marketisations | 20 | - | - |
| marketizations | 29 | - | - |
| marsipobranchs | 25 | - | - |
| martyrisations | 19 | - | - |
| martyrizations | 28 | - | - |
| martyrological | 22 | - | - |
| martyrologists | 20 | - | - |
| marvellousness | 19 | - | - |
| manometrically | 23 | - | - |
| marconigraphed | 25 | - | - |
| massotherapies | 21 | - | - |
| massotherapist | 21 | - | - |
| matriculations | 18 | - | - |
| matronlinesses | 16 | - | - |
| mastigophorans | 22 | - | - |
| mastigophorous | 22 | - | - |
| matchboardings | 25 | - | - |
| manifoldnesses | 20 | - | - |
| malabsorptions | 20 | - | - |
| malacophyllous | 26 | - | - |
| malacostracans | 20 | - | - |
| malacostracous | 20 | - | - |
| magniloquently | 29 | in a rhetorically grandiloquent manner | the orator spoke magniloquently |
| magniloquences | 28 | - | - |
| magnetisations | 17 | - | - |
| magnetizations | 26 | - | - |
| magnetometries | 19 | - | - |
| magnetospheres | 22 | - | - |
| magnetospheric | 24 | - | - |
| magnetostatics | 19 | - | - |
| magnifications | 22 | - | - |
| maladaptations | 19 | - | - |
| mallemarokings | 23 | - | - |
| malodorousness | 17 | the attribute of having a strong offensive smell | - |
| malpighiaceous | 24 | - | - |
| mangoldwurzels | 30 | - | - |
| manifestations | 19 | - | - |
| malapportioned | 21 | - | - |
| malappropriate | 22 | - | - |
| malariologists | 17 | - | - |
| malcontentedly | 22 | - | - |
| maldeployments | 24 | - | - |
| mesmerisations | 18 | - | - |
| mesmerizations | 27 | - | - |
| mesocephalisms | 25 | - | - |
| mesotheliomata | 21 | - | - |
| metachromatism | 25 | - | - |
| metacognitions | 19 | - | - |
| metacomputings | 23 | - | - |
| mesenchymatous | 26 | - | - |
| mesencephalons | 23 | - | - |
| meretriciously | 21 | in a meretricious manner | the boat is meretriciously decorated |
| metafictionist | 21 | - | - |
| metagrabolised | 20 | totally perplexed and mixed up | - |
| metagrabolises | 19 | - | - |
| metallographer | 22 | - | - |
| metallographic | 24 | - | - |
| metamorphosing | 24 | - | - |
| metaphosphates | 26 | - | - |
| metaphosphoric | 28 | - | - |
| metallogenetic | 19 | - | - |
| metallizations | 25 | - | - |
| metagrabolized | 29 | totally perplexed and mixed up | - |
| metagrabolizes | 28 | - | - |
| metagrobolised | 20 | totally perplexed and mixed up | - |
| metagrobolises | 19 | - | - |
| metagrobolized | 29 | totally perplexed and mixed up | all this duncical nonsense has my brains metagrobolized |
| metagrobolizes | 28 | - | - |
| metallisations | 16 | - | - |
| mercerizations | 27 | - | - |
| megaherbivores | 25 | - | - |
| megakaryocytes | 29 | - | - |
| megakaryocytic | 31 | of or pertaining to large bone marrow cells | - |
| megalocephalic | 26 | - | - |
| megalopolitans | 19 | - | - |
| megalosaurians | 17 | - | - |
| medicalization | 28 | - | - |
| mechanisations | 21 | - | - |
| mechanizations | 30 | - | - |
| mechanotherapy | 29 | - | - |
| meddlesomeness | 20 | aggressiveness as evidenced by intruding; by advancing yourself or your ideas without invitation | - |
| mediatisations | 17 | - | - |
| mediatizations | 26 | - | - |
| medicalisation | 19 | - | - |
| megalosauruses | 17 | - | - |
| megaphonically | 27 | - | - |
| megascopically | 26 | - | - |
| melodramatists | 19 | - | - |
| melodramatized | 29 | - | - |
| melodramatizes | 28 | - | - |
| memorabilities | 20 | - | - |
| mendaciousness | 19 | - | - |
| meniscectomies | 22 | - | - |
| mercaptopurine | 22 | a drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemia | - |
| melodramatises | 19 | - | - |
| melodramatised | 20 | - | - |
| megasporangium | 22 | a plant structure that produces megaspores | - |
| megasporophyll | 27 | in non-flowering plants, a sporophyll that bears only megasporangia | - |
| megatechnology | 26 | - | - |
| melancholiness | 21 | - | - |
| melastomaceous | 20 | - | - |
| mellifications | 21 | - | - |
| mercerisations | 18 | - | - |
| macrostructure | 20 | - | - |
| leukemogenesis | 21 | - | - |
| libidinosities | 17 | - | - |
| libidinousness | 17 | - | - |
| lichenological | 22 | - | - |
| lichenologists | 20 | - | - |
| liberationists | 16 | - | - |
| liberationisms | 18 | - | - |
| leukodystrophy | 30 | - | - |
| lexicalisation | 23 | the process of making a word to express a concept | - |
| lexicalization | 32 | the process of making a word to express a concept | - |
| lexicographers | 29 | - | - |
| lexicographies | 29 | - | - |
| lexicographist | 29 | - | - |
| liberalisation | 16 | the act of making less strict | - |
| lipogrammatism | 23 | - | - |
| lipogrammatist | 21 | - | - |
| liposculptures | 20 | - | - |
| literalisation | 14 | - | - |
| literalization | 23 | - | - |
| linearizations | 23 | - | - |
| linearisations | 14 | - | - |
| lignifications | 20 | - | - |
| lignocellulose | 17 | - | - |
| lignosulfonate | 18 | - | - |
| limnologically | 22 | with regard to or concerning limnology | - |
| leukemogeneses | 21 | - | - |
| laryngectomies | 22 | - | - |
| laughingstocks | 25 | - | - |
| lateroversions | 17 | - | - |
| laryngological | 21 | - | - |
| laryngologists | 19 | - | - |
| laryngophonies | 23 | - | - |
| laryngoscopies | 22 | - | - |
| laryngoscopist | 22 | - | - |
| lateralisation | 14 | localization of function on either the right or left sides of the brain | - |
| lecythidaceous | 25 | - | - |
| lepidopterists | 19 | - | - |
| leptocephalous | 23 | - | - |
| leptodactylous | 22 | - | - |
| leucitohedrons | 20 | - | - |
| leucocythaemia | 26 | - | - |
| leucocytolyses | 24 | - | - |
| leucocytolysis | 24 | - | - |
| lepidodendroid | 20 | - | - |
| lemmatizations | 27 | - | - |
| legislatorship | 20 | the office of legislator | - |
| legitimisation | 17 | - | - |
| lemmatisations | 18 | - | - |
| leucocytopenia | 23 | - | - |
| luminousnesses | 16 | - | - |
| lymphosarcomas | 28 | - | - |
| lyophilisation | 22 | a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes | - |
| lyophilization | 31 | a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes | - |
| lysogenicities | 20 | - | - |
| lysogenisation | 18 | the process by which a bacterium acquires a phage that becomes integrated into its genome | - |
| lysogenization | 27 | the process by which a bacterium acquires a phage that becomes integrated into its genome | - |
| macadamisation | 21 | - | - |
| macadamization | 30 | - | - |
| lymphographies | 30 | - | - |
| lymphoadenomas | 27 | - | - |
| lusciousnesses | 16 | - | - |
| lustrousnesses | 14 | - | - |
| luteinisations | 14 | - | - |
| luteinizations | 23 | - | - |
| lycanthropists | 24 | - | - |
| lymphangiogram | 28 | an angiogram of the lymph nodes and lymph vessels made after the injection of a radiopaque substance | - |
| maccheroncinis | 25 | - | - |
| machicolations | 23 | - | - |
| macroevolution | 21 | evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups | - |
| macroglobulins | 21 | - | - |
| macromolecular | 22 | relating to or consisting of or characterized by macromolecules | macromolecular compounds |
| macromolecules | 22 | - | - |
| macronutrients | 18 | - | - |
| macropinakoids | 25 | - | - |
| macrosociology | 24 | - | - |
| macrodiagonals | 20 | - | - |
| macrodactylous | 24 | - | - |
| macroaggregate | 21 | - | - |
| macrocephalias | 25 | - | - |
| macrocephalies | 25 | - | - |
| macrocephalous | 25 | having an exceptionally large head and brain | - |
| macrodactylies | 24 | - | - |
| macrosporangia | 21 | - | - |
| lumbersomeness | 20 | - | - |
| lithotritizing | 27 | - | - |
| liturgiologies | 16 | - | - |
| liturgiologist | 16 | - | - |
| loathfulnesses | 20 | - | - |
| localisability | 21 | - | - |
| localizability | 30 | - | - |
| lithotritising | 18 | - | - |
| lithotriptists | 19 | - | - |
| lithifications | 22 | - | - |
