12-letter words ending with E
Dive into the specific realm of 12-letter words that conclude with the letter E. This focused section reveals the fascinating ways in which words of this particular length, ending with E, contribute to the richness of the English language. Whether it's for expanding your vocabulary, solving puzzles, or simply for the love of words, discover how these terms uniquely blend length and ending sound.
| Word | Points | Definition | Sentence example |
|---|---|---|---|
| unbelievable | 19 | having a probability too low to inspire belief | - |
| intelligence | 15 | secret information about an enemy (or potential enemy) | we sent out planes to gather intelligence on their radar coverage |
| surveillance | 17 | close observation of a person or group (usually by the police) | - |
| independence | 18 | freedom from control or influence of another or others | - |
| congratulate | 15 | express congratulations | - |
| architecture | 19 | (computer science) the structure and organization of a computer's hardware or system software | the architecture of a computer's system software |
| acquaintance | 25 | personal knowledge or information about someone or something | - |
| unacceptable | 20 | not conforming to standard usage | the following use of `access' was judged unacceptable by a panel of linguists; `You can access your cash at any of 300 automatic tellers' |
| mademoiselle | 17 | small silvery drumfish often mistaken for white perch; found along coasts of United States from New York to Mexico | - |
| conservative | 20 | conforming to the standards and conventions of the middle class | - |
| interference | 17 | the act of hindering or obstructing or impeding | - |
| significance | 20 | a meaning that is not expressly stated but can be inferred | the significance of his remark became clear only later |
| unreasonable | 14 | beyond normal limits | unreasonable demands |
| considerable | 17 | large or relatively large in number or amount or extent or degree | a considerable quantity |
| irresistible | 14 | impossible to resist; overpowering | irresistible (or resistless) impulses |
| circumstance | 20 | information that should be kept in mind when making a decision | - |
| affectionate | 20 | having or displaying warmth or affection | affectionate children |
| unimaginable | 17 | totally unlikely | - |
| testosterone | 12 | a potent androgenic hormone produced chiefly by the testes; responsible for the development of male secondary sex characteristics | - |
| unforgivable | 21 | not excusable | - |
| illegitimate | 15 | contrary to or forbidden by law | an illegitimate seizure of power |
| transvestite | 15 | someone who adopts the dress or manner or sexual role of the opposite sex | - |
| questionable | 23 | able to be refuted | - |
| constructive | 19 | constructing or tending to construct or improve or promote development | constructive criticism |
| disadvantage | 18 | put at a disadvantage; hinder, harm | This rule clearly disadvantages me |
| incompetence | 20 | lack of physical or intellectual ability or qualifications | - |
| perseverance | 19 | persistent determination | - |
| indifference | 21 | the trait of lacking enthusiasm for or interest in things generally | - |
| irreversible | 17 | incapable of being reversed | irreversible momentum toward revolution |
| unattractive | 17 | not appealing to the senses | - |
| manipulative | 19 | skillful in influencing or controlling others to your own advantage | the early manipulative techniques of a three-year-old child |
| impenetrable | 18 | permitting little if any light to pass through because of denseness of matter | impenetrable gloom |
| inexplicable | 25 | incapable of being explained or accounted for | inexplicable errors |
| reproductive | 20 | producing new life or offspring | the reproductive potential of a species is its relative capacity to reproduce itself under optimal conditions |
| discriminate | 17 | treat differently on the basis of sex or race | - |
| incorrigible | 17 | difficult or impossible to manage or control | an incorrigible mess |
| disobedience | 18 | the failure to obey | - |
| bachelorette | 19 | a young unmarried woman who lives alone | - |
| recognizable | 26 | capable of being recognized | - |
| inaccessible | 18 | capable of being reached only with great difficulty or not at all | - |
| undetectable | 17 | barely able to be perceived | - |
| formaldehyde | 25 | a colorless poisonous gas; made by the oxidation of methanol | - |
| transference | 17 | transferring ownership | - |
| appreciative | 21 | feeling or expressive of gratitude | was appreciative of his efforts |
| intermediate | 15 | around the middle of a scale of evaluation | intermediate capacity |
| incompatible | 20 | used especially of drugs or muscles that counteract or neutralize each other's effect | - |
| magnificence | 22 | splendid or imposing in size or appearance | - |
| incomparable | 20 | such that comparison is impossible; unsuitable for comparison or lacking features that can be compared | an incomparable week of rest and pleasure |
| insufferable | 20 | too extreme to bear | the insufferable heat of August in a New York apartment with no air conditioning |
| invulnerable | 17 | immune to attack; impregnable | gunners raked the beach from invulnerable positions on the cliffs |
| conglomerate | 17 | a group of diverse companies under common ownership and run as a single organization | - |
| disagreeable | 16 | not agreeing with your tastes or expectations | found the task disagreeable and decided to abandon it |
| apprehensive | 22 | mentally upset over possible misfortune or danger etc | apprehensive about her job |
| unmistakable | 20 | clearly revealed to the mind or the senses or judgment | - |
| unattainable | 14 | impossible to achieve | an unattainable goal |
| kaleidoscope | 21 | a complex pattern of constantly changing colors and shapes | - |
| unresponsive | 17 | aloof or indifferent | was unresponsive to her passionate advances |
| inconclusive | 19 | not conclusive; not putting an end to doubt or question | an inconclusive reply |
| rehabilitate | 17 | help to readapt, as to a former state of health or good repute | The prisoner was successfully rehabilitated |
| disintegrate | 14 | lose a stored charge, magnetic flux, or current | the particles disintegrated during the nuclear fission process |
| stratosphere | 17 | the atmospheric layer between the troposphere and the mesosphere | - |
| unfathomable | 22 | resembling an abyss in depth; so deep as to be unmeasurable | - |
| inhospitable | 19 | not hospitable | they are extremely inhospitable these days |
| degenerative | 17 | (of illness) marked by gradual deterioration of organs and cells along with loss of function | degenerative diseases of old age |
| speakerphone | 23 | a telephone with a microphone and loudspeaker; can be used without picking up a handset; several people can participate in a call at the same time | - |
| inadmissible | 17 | not deserving to be admitted | inadmissible evidence |
| mountainside | 15 | the side or slope of a mountain | - |
| dishonorable | 18 | deceptive or fraudulent; disposed to cheat or defraud or deceive | - |
| dissociative | 18 | tending to produce dissociation | - |
| characterize | 28 | describe or portray the character or the qualities or peculiarities of | You can characterize his behavior as that of an egotist |
| overestimate | 17 | a calculation that results in an estimate that is too high | - |
| authenticate | 17 | establish the authenticity of something | - |
| subcommittee | 20 | a subset of committee members organized for a specific purpose | - |
| inconsolable | 16 | sad beyond comforting; incapable of being consoled | inconsolable when her son died |
| interminable | 16 | tiresomely long; seemingly without end | an interminable sermon |
| incalculable | 18 | too much to be measured | incalculable riches |
| incontinence | 16 | indiscipline with regard to sensuous pleasures | - |
| identifiable | 18 | capable of being identified | - |
| inexperience | 23 | lack of experience and the knowledge and understanding derived from experience | procedural inexperience created difficulties |
| contemptible | 20 | deserving of contempt or scorn | - |
| immeasurable | 18 | impossible to measure | immeasurable suffering |
| indisputable | 17 | impossible to doubt or dispute | indisputable (or sure) proof |
| extravagance | 25 | the quality of exceeding the appropriate limits of decorum or probability or truth | we were surprised by the extravagance of his description |
| horticulture | 17 | the cultivation of plants | - |
| cinematheque | 28 | - | - |
| unmanageable | 17 | difficult to use or handle or manage because of size or weight or shape | - |
| unremarkable | 20 | found in the ordinary course of events | - |
| philosophize | 31 | reason philosophically | - |
| frankincense | 21 | an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation | - |
| hypertensive | 23 | a person who has abnormally high blood pressure | - |
| impertinence | 18 | inappropriate playfulness | - |
| disreputable | 17 | lacking respectability in character or behavior or appearance | - |
| preventative | 20 | an agent or device intended to prevent conception | - |
| preservative | 20 | a chemical compound that is added to protect against decay or decomposition | - |
| prerequisite | 23 | something that is required in advance | Latin was a prerequisite for admission |
| clairvoyance | 22 | apparent power to perceive things that are not present to the senses | - |
| substantiate | 14 | make real or concrete; give reality or substance to | our ideas must be substantiated into actions |
| psychobabble | 28 | using language loaded with psychological terminology | - |
| recognizance | 26 | (law) a security entered into before a court with a condition to perform some act required by law; on failure to perform that act a sum is forfeited | - |
| unemployable | 21 | not acceptable for employment as a worker | his illiteracy made him unemployable |
| unpardonable | 17 | not admitting of pardon | unpardonable behavior |
| marriageable | 17 | of girls or women who are eligible to marry | - |
| happenstance | 21 | an event that might have been arranged although it was really accidental | - |
| impermanence | 20 | the property of not existing for indefinitely long durations | - |
| indefensible | 18 | (of theories etc) incapable of being defended or justified | - |
| redistribute | 15 | distribute anew | redistribute the troops more strategically |
| incapacitate | 18 | make unable to perform a certain action | - |
| controllable | 16 | capable of being controlled | - |
| inarticulate | 14 | without or deprived of the use of speech or words | inarticulate beasts |
| recognisable | 17 | capable of being recognized | - |
| quintessence | 23 | the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies | - |
| unprofitable | 19 | producing little or no profit or gain | deposits abandoned by mining companies as unprofitable |
| exploitative | 24 | tending to exploit or make use of | - |
| irrespective | 19 | in spite of everything; without regard to drawbacks | - |
| carbohydrate | 23 | an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain | - |
| commensurate | 18 | corresponding in size or degree or extent | pay should be commensurate with the time worked |
| amphitheatre | 22 | a sloping gallery with seats for spectators (as in an operating room or theater) | - |
| approachable | 23 | capable of being read with comprehension | the tales seem more approachable than his more difficult novels |
| unchangeable | 20 | not changeable or subject to change | a fixed and unchangeable part of the germ plasm |
| misadventure | 18 | an instance of misfortune | - |
| multipurpose | 18 | having multiple uses | a multipurpose tool |
| interpretive | 17 | that provides interpretation | - |
| intelligible | 15 | capable of being apprehended or understood | - |
| psychoactive | 27 | affecting the mind or mood or other mental processes | psychoactive drugs |
| reconstitute | 14 | construct or form anew or provide with a new structure | The governing board was reconstituted |
| nomenclature | 16 | a system of words used to name things in a particular discipline | biological nomenclature |
| nonexistence | 21 | the state of not existing | - |
| indigestible | 16 | digested with difficulty | - |
| businesslike | 18 | not distracted by anything unrelated to the goal | - |
| unimpressive | 19 | not capable of impressing | - |
| unproductive | 20 | not producing desired results | the talks between labor and management were unproductive |
| obsolescence | 18 | the process of becoming obsolete; falling into disuse or becoming out of date | a policy of planned obsolescence |
| predominance | 19 | the state of being predominant over others | - |
| irredeemable | 17 | insusceptible of reform | irredeemable sinners |
| breaststroke | 18 | a swimming stroke; the arms are extended together in front of the head and swept back on either side accompanied by a frog kick | - |
| thoroughfare | 22 | a public road from one place to another | - |
| transferable | 17 | capable of being moved or conveyed from one place to another | - |
| quantifiable | 26 | capable of being quantified | - |
| unquenchable | 28 | impossible to quench | unquenchable thirst |
| neuroscience | 16 | the scientific study of the nervous system | - |
| permanganate | 17 | a dark purple salt of permanganic acid; in water solution it is used as a disinfectant and antiseptic | - |
| polyurethane | 20 | any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber | - |
| indiscipline | 17 | the trait of lacking discipline | - |
| invertebrate | 17 | lacking a backbone or spinal column | worms are an example of invertebrate animals |
| communicable | 22 | (of disease) capable of being transmitted by infection | - |
| discomfiture | 20 | anxious embarrassment | - |
| reminiscence | 18 | the process of remembering (especially the process of recovering information by mental effort) | - |
| subservience | 19 | in a subservient state | - |
| unassailable | 14 | without flaws or loopholes | - |
| protectorate | 16 | a state or territory partly controlled by (but not a possession of) a stronger state but autonomous in internal affairs; protectorates are established by treaty | - |
| reappearance | 18 | the act of someone appearing again | his reappearance as Hamlet has been long awaited |
| unfavourable | 20 | involving or creating circumstances detrimental to success or effectiveness | - |
| postgraduate | 16 | a student who continues studies after graduation | - |
| fluorescence | 19 | light emitted during absorption of radiation of some other (invisible) wavelength | - |
| illustrative | 15 | serving to demonstrate | - |
| inspectorate | 16 | a body of inspectors | - |
| defibrillate | 18 | stop the fibrillation and restore normal contractions, usually by means of electric shocks | The patient's heart had to be defibrillated to save his life |
| disassociate | 15 | part; cease or break association with | She disassociated herself from the organization when she found out the identity of the president |
| spectroscope | 20 | an optical instrument for spectrographic analysis | - |
| straightedge | 18 | hand tool consisting of a flat rigid rectangular bar (metal or wood) that can be used to draw straight lines (or test their straightness) | - |
| ungovernable | 18 | incapable of being controlled | - |
| miscalculate | 18 | judge incorrectly | - |
| maneuverable | 19 | capable of maneuvering or changing position | a highly maneuverable ship |
| masterstroke | 18 | an achievement demonstrating great skill or mastery | - |
| demonstrable | 17 | capable of being demonstrated or proved | a demonstrable lack of concern for the general welfare of people |
| acquiescence | 27 | agreement with a statement or proposal to do something | a murmur of acquiescence from the assembly |
| regenerative | 16 | - | - |
| unanswerable | 17 | impossible to answer | an unanswerable argument |
| quantitative | 24 | expressible as a quantity or relating to or susceptible of measurement | export wheat without quantitative limitations |
| progesterone | 15 | a steroid hormone (trade name Lipo-Lutin) produced in the ovary; prepares and maintains the uterus for pregnancy | - |
| prescriptive | 21 | pertaining to giving directives or rules | prescriptive grammar is concerned with norms of or rules for correct usage |
| manoeuvrable | 19 | capable of maneuvering or changing position | - |
| intransitive | 15 | a verb (or verb construction) that does not take an object | - |
| editorialize | 22 | insert personal opinions into an objective statement | - |
| brilliantine | 14 | a pomade to make the hair manageable and lustrous | - |
| capercaillie | 18 | large black Old World grouse | - |
| administrate | 15 | work in an administrative capacity; supervise or be in charge of | - |
| reproducible | 19 | capable of being reproduced | astonishingly reproducible results can be obtained |
| tetracycline | 19 | an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections | - |
| tubocurarine | 16 | a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles | - |
| recapitulate | 16 | summarize briefly | Let's recapitulate the main ideas |
| radioisotope | 15 | a radioactive isotope of an element; produced either naturally or artificially | - |
| unobtainable | 16 | not capable of being obtained | timber is virtually unobtainable in the islands |
| unnoticeable | 16 | not drawing attention | an unnoticeable cigarette burn on the carpet |
| unrepeatable | 16 | not able or fit to be repeated or quoted | - |
| metamorphose | 21 | change completely the nature or appearance of | In Kafka's story, a person metamorphoses into a bug |
| overexposure | 24 | the act of exposing film to too much light or for too long a time | - |
| photomontage | 20 | a montage that uses photographic images | - |
| laryngoscope | 20 | a medical instrument for examining the larynx | - |
| luminescence | 18 | light from nonthermal sources | - |
| undefeatable | 18 | - | - |
| exchangeable | 27 | capable of being exchanged for or replaced by something of equal value | - |
| ineradicable | 17 | not able to be destroyed or rooted out | ineradicable superstitions |
| indoctrinate | 15 | teach doctrines to; teach uncritically | The Moonies indoctrinate their disciples |
| indissoluble | 15 | (of a substance) incapable of being dissolved | - |
| knowledgable | 23 | - | - |
| attributable | 16 | capable of being attributed | the collapse of the movement was attributable to a lack of morale |
| belligerence | 17 | hostile or warlike attitude or nature | - |
| constrictive | 19 | restricting the scope or freedom of action | - |
| decentralize | 24 | make less central | After the revolution, food distribution was decentralized |
| depressurize | 24 | decrease the pressure of | depressurize the cabin in the air plane |
| disconsolate | 15 | causing dejection | a disconsolate winter landscape |
| anaesthetize | 24 | administer an anesthetic drug to | - |
| accumulative | 21 | increasing by successive addition | the eventual accumulative effect of these substances |
| steeplechase | 19 | a footrace of usually 3000 meters over a closed track with hurdles and a water jump | - |
| substructure | 16 | lowest support of a structure | - |
| thermosphere | 22 | the atmospheric layer between the mesosphere and the exosphere | - |
| thermocouple | 21 | a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference | - |
| tradespeople | 17 | people engaged in trade | - |
| undependable | 18 | not worthy of reliance or trust | an undependable assistant |
| undisputable | 17 | not open to question; obviously true | - |
| microclimate | 20 | - | - |
| oscilloscope | 18 | electronic equipment that provides visual images of varying electrical quantities | - |
| precognitive | 20 | foreseeing the future | - |
| polyethylene | 23 | a lightweight thermoplastic; used especially in packaging and insulation | - |
| programmable | 21 | - | - |
| labyrinthine | 20 | resembling a labyrinth in form or complexity | a labyrinthine network of tortuous footpaths |
| exsanguinate | 20 | - | - |
| frontispiece | 19 | an ornamental facade | - |
| gerontophile | 18 | - | - |
| hardscrabble | 22 | barely satisfying a lower standard | the sharecropper's hardscrabble life |
| grotesquerie | 22 | ludicrous or incongruous unnaturalness or distortion | - |
| imperishable | 21 | lasting a long time | imperishable truths |
| inextricable | 23 | not permitting extrication; incapable of being disentangled or untied | an inextricable knot |
| irremediable | 17 | impossible to remedy or correct or redress | an irremediable error |
| disorientate | 13 | cause to be lost or disoriented | - |
| characterise | 19 | describe or portray the character or the qualities or peculiarities of | - |
| alliterative | 15 | having the same consonant at the beginning of each stressed syllable | alliterative verse |
| reinvigorate | 16 | impart vigor, strength, or vitality to | - |
| reoccurrence | 18 | - | - |
| stakhanovite | 22 | - | - |
| substitutive | 17 | - | - |
| unbreachable | 21 | - | - |
| unbreathable | 19 | - | - |
| unachievable | 22 | impossible to achieve | - |
| uncharitable | 19 | lacking love and generosity | all pious words and uncharitable deeds |
| prosecutable | 18 | - | - |
| protuberance | 18 | something that bulges out or is protuberant or projects from its surroundings | the occipital protuberance was well developed |
| recuperative | 19 | promoting recuperation | recuperative powers |
| reconcilable | 18 | capable of being reconciled | her way of thinking is reconcilable with mine |
| methotrexate | 24 | toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | - |
| omnipresence | 18 | the state of being everywhere at once (or seeming to be everywhere at once) | - |
| prednisolone | 15 | a glucocorticoid (trade names Pediapred or Prelone) used to treat inflammatory conditions | - |
| predetermine | 17 | cause to be biased | - |
| magistrature | 15 | the position of magistrate | - |
| clomipramine | 20 | a tricyclic antidepressant drug | - |
| unsupportive | 19 | not furnishing support or assistance | - |
| entomologize | 24 | - | - |
| equestrienne | 21 | - | - |
| equidistance | 24 | - | - |
| equipollence | 25 | - | - |
| equiprobable | 27 | equally probable | - |
| equimultiple | 25 | - | - |
| endonuclease | 15 | a nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes | - |
| endoparasite | 15 | any of various parasites that live in the internal organs of animals (especially intestinal worms) | - |
| endoperoxide | 23 | - | - |
| enterokinase | 16 | enzyme in the intestinal juice that converts inactive trypsinogen into active trypsin | - |
| enterchaunge | 18 | - | - |
| entomofaunae | 17 | - | - |
| entomologise | 15 | - | - |
| exopeptidase | 24 | - | - |
| excursionize | 30 | - | - |
| excursionise | 21 | - | - |
| exhilarative | 25 | - | - |
| exterminable | 23 | capable of being totally destroyed or wiped out | - |
| extraditable | 22 | - | - |
| extortionate | 19 | greatly exceeding bounds of reason or moderation | extortionate prices |
| extramundane | 22 | - | - |
| exprobrative | 26 | - | - |
| exsufflicate | 27 | - | - |
| expropriable | 25 | - | - |
| ethnoscience | 19 | - | - |
| ethoxyethane | 28 | a colorless volatile highly flammable liquid formerly used as an inhalation anesthetic | - |
| ethylbenzene | 29 | - | - |
| essentialize | 21 | - | - |
| espagnolette | 15 | - | - |
| essentialise | 12 | - | - |
| ethanolamine | 17 | - | - |
| etheostomine | 17 | - | - |
| exaggerative | 24 | - | - |
| exasperative | 24 | - | - |
| excogitative | 25 | concerned with excogitating or having the power of excogitation | - |
| fissipalmate | 19 | - | - |
| fissicostate | 17 | - | - |
| fiddledeedee | 19 | - | - |
| fictionalize | 26 | make into fiction | The writer fictionalized the lives of his parents in his latest novel |
| fictionalise | 17 | make into fiction | - |
| flittermouse | 17 | - | - |
| floriculture | 17 | the cultivation of flowering plants | - |
| fluoresceine | 17 | a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) | - |
| fluorapatite | 17 | a form of apatite in which fluorine predominates over chlorine | - |
| fertilizable | 26 | capable of being fertilized | - |
| fairnitickle | 21 | - | - |
| fairnytickle | 24 | - | - |
| fantasticate | 17 | - | - |
| extrauterine | 19 | - | - |
| extrasystole | 22 | a premature systole resulting in a momentary cardiac arrhythmia | - |
| extraversive | 25 | directed outward; marked by interest in others or concerned with external reality | - |
| facilitative | 20 | freeing from difficulty or impediment | facilitative changes in the economic structure |
| extremophile | 26 | - | - |
| extroversive | 25 | directed outward; marked by interest in others or concerned with external reality | - |
| feldspathose | 21 | - | - |
| ferrocyanide | 21 | salt of ferrocyanic acid usually obtained by a reaction of a cyanide with iron sulphate | - |
| ferricyanide | 21 | salt of ferricyanic acid obtained by oxidation of a ferrocyanide | - |
| fermentative | 20 | - | - |
| fertilisable | 17 | - | - |
| frondescence | 20 | - | - |
| frequentable | 26 | - | - |
| galactagogue | 17 | agent that induces milk secretion | - |
| galvanoscope | 20 | - | - |
| furazolidone | 25 | - | - |
| forecarriage | 18 | - | - |
| forecastable | 19 | - | - |
| foreclosable | 19 | - | - |
| foreknowable | 24 | - | - |
| fluphenazine | 29 | tranquilizer used to treat psychotic disorders | - |
| fluviomarine | 20 | - | - |
| fluorochrome | 22 | any of various fluorescent substances used in fluorescence microscopy to stain specimens | - |
| fossilizable | 26 | - | - |
| fortresslike | 19 | - | - |
| fossilisable | 17 | - | - |
| foretriangle | 16 | - | - |
| formalisable | 19 | - | - |
| formalizable | 28 | - | - |
| glycopeptide | 23 | - | - |
| glutethimide | 19 | sedative (trade name Doriden) used to treat some sleep disorders | - |
| glyptothecae | 23 | - | - |
| glaucescence | 19 | - | - |
| globigerinae | 16 | - | - |
| grammaticize | 28 | - | - |
| grammaticise | 19 | - | - |
| granodiorite | 14 | - | - |
| gerontophobe | 20 | - | - |
| harlequinade | 25 | acting like a clown or buffoon | - |
| happenchance | 26 | - | - |
| harmoniphone | 22 | - | - |
| harmonisable | 19 | - | - |
| harmonizable | 28 | capable of being made harmonious or consistent | - |
| heliogravure | 19 | an intaglio print produced by gravure | - |
| hellgrammite | 20 | - | - |
| haussmannise | 17 | - | - |
| haussmannize | 26 | - | - |
| grossularite | 13 | - | - |
| guanethidine | 17 | - | - |
| hispaniolise | 17 | - | - |
| hispaniolize | 26 | - | - |
| homocysteine | 22 | - | - |
| hereinbefore | 20 | - | - |
| hemichordate | 23 | - | - |
| hemimorphite | 24 | a white mineral; a common ore of zinc | - |
| hemiparasite | 19 | a parasitic plant that contains some chlorophyll and therefore is capable of photosynthesis | - |
| hexafluoride | 26 | - | - |
| heterozygote | 28 | (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspring | - |
| hexachloride | 28 | - | - |
| heterogamete | 18 | - | - |
| hypersurface | 25 | - | - |
| hypnotisable | 22 | - | - |
| hypnotizable | 31 | - | - |
| hypochlorite | 25 | any salt or ester of hypochlorous acid | - |
| hyperintense | 20 | - | - |
| hypermutable | 24 | - | - |
| hypoxanthine | 30 | - | - |
| hyposulphate | 25 | - | - |
| hyposulphite | 25 | - | - |
| hybridisable | 23 | - | - |
| hybridizable | 32 | - | - |
| hydnocarpate | 23 | - | - |
| hydrastinine | 19 | - | - |
| hydrozincite | 30 | - | - |
| hydrolysable | 24 | - | - |
| hydrolyzable | 33 | capable of undergoing hydrolysis | - |
| hydromedusae | 22 | - | - |
| hydrophilite | 24 | - | - |
| hydroquinone | 28 | - | - |
| improvidence | 22 | a lack of prudence and care by someone in the management of resources | - |
| imprisonable | 18 | - | - |
| inadvertence | 18 | an unintentional omission resulting from failure to notice something | - |
| inabstinence | 16 | - | - |
| impierceable | 20 | - | - |
| imposthumate | 21 | - | - |
| imponderable | 19 | a factor whose effects cannot be accurately assessed | human behavior depends on many imponderables |
| incharitable | 19 | - | - |
| incommutable | 20 | not interchangeable or able to substitute one for another | a rare incommutable skill |
| incoagulable | 17 | - | - |
| incogitative | 18 | - | - |
| incognisable | 17 | - | - |
| incognisance | 17 | - | - |
| incognizable | 26 | incapable of being perceived or known | - |
| incognizance | 26 | a lack of knowledge or recognition | - |
| inappeasable | 18 | - | - |
| incalescence | 18 | the property of being warming | - |
| inappellable | 18 | - | - |
| inapplicable | 20 | not capable of being applied | rules inapplicable to day students |
| illiberalize | 23 | - | - |
| illiberalise | 14 | - | - |
| illuminative | 17 | - | - |
| impassionate | 16 | - | - |
| imperceptive | 23 | - | - |
| imperfective | 24 | aspect without regard to the beginning or completion of the action of the verb | - |
| imperforable | 21 | - | - |
| immensurable | 18 | impossible to measure | - |
| informidable | 20 | - | - |
| inexpungible | 24 | not capable of being expunged | the inexpungible scent of a bottle of perfume he had broken |
| inextensible | 21 | not extensile | - |
| inextirpable | 23 | incapable of extermination or extirpation | some weeds seem inextirpable |
| infiltrative | 18 | - | - |
| insomnolence | 16 | - | - |
| insolubilize | 23 | - | - |
| insolubilise | 14 | - | - |
| inoperculate | 16 | - | - |
| inobservable | 19 | - | - |
| inobservance | 19 | - | - |
| inexpugnable | 24 | incapable of being overcome, challenged or refuted | - |
| indehiscence | 20 | - | - |
| indeclinable | 17 | - | - |
| indefeasible | 18 | not liable to being annulled or voided or undone | an indefeasible right to freedom |
| indefectible | 20 | - | - |
| incrassative | 17 | - | - |
| incongruence | 17 | - | - |
| inconsonance | 16 | - | - |
| incompliance | 20 | - | - |
| incomputable | 20 | beyond calculation or measure | an incomputable amount |
| inconsumable | 18 | - | - |
| incorrodible | 17 | - | - |
| incorrosible | 16 | - | - |
| incorruptive | 19 | - | - |
| incoordinate | 15 | - | - |
| incorporable | 18 | - | - |
| industrywide | 20 | - | - |
| ineffaceable | 22 | - | - |
| inexpedience | 24 | the quality of being unsuited to the end in view | - |
| inexpansible | 23 | - | - |
| inexactitude | 22 | the quality of being inexact | - |
| inexecutable | 23 | - | - |
| inexhaustive | 25 | - | - |
| inexpressive | 24 | not expressive | an inexpressive face |
| indetectable | 17 | - | - |
| indetectible | 17 | - | - |
| indivertible | 18 | - | - |
| interpolable | 16 | - | - |
| interposable | 16 | - | - |
| interpretate | 14 | - | - |
| interrogable | 15 | - | - |
| interservice | 17 | - | - |
| interrogatee | 13 | - | - |
| interruptive | 17 | - | - |
| intermissive | 17 | - | - |
| intermixture | 21 | an additional ingredient that is added by mixing with the base | a large intermixture of sand |
| intermontane | 14 | - | - |
| intermundane | 15 | - | - |
| interpellate | 14 | question formally about policy or government business | - |
| intoxicative | 24 | - | - |
| intramundane | 15 | - | - |
| intrinsicate | 14 | - | - |
| introducible | 17 | - | - |
| introductive | 18 | - | - |
| intrauterine | 12 | within the womb | - |
| intertexture | 19 | - | - |
| intertillage | 13 | - | - |
| intersterile | 12 | - | - |
| intervillage | 16 | - | - |
| intervisible | 17 | - | - |
| interwreathe | 18 | - | - |
| intemperance | 18 | excess in action and immoderate indulgence of bodily appetites, especially in passion or indulgence | the intemperance of their language |
| intempestive | 19 | - | - |
| intercolline | 14 | - | - |
| interceptive | 19 | - | - |
| intercommune | 18 | - | - |
| instructible | 16 | - | - |
| insusceptive | 19 | - | - |
| intellective | 17 | - | - |
| interinvolve | 18 | - | - |
| interlineate | 12 | - | - |
| interculture | 14 | - | - |
| intercompare | 18 | - | - |
| interdictive | 18 | - | - |
| interfluence | 17 | - | - |
| interfoliate | 15 | - | - |
| interfertile | 15 | - | - |
| interdiffuse | 19 | - | - |
| jurisdictive | 25 | - | - |
| kaleidophone | 22 | - | - |
| juvenescence | 26 | the process of growing into a youth | - |
| japonaiserie | 21 | - | - |
| jettisonable | 21 | - | - |
| kiddiewinkie | 25 | - | - |
| isoteniscope | 16 | - | - |
| invigorative | 19 | - | - |
| investigable | 18 | - | - |
| introvertive | 18 | directed inward; marked by interest in yourself or concerned with inner feelings | - |
| intumescence | 18 | swelling up with blood or other fluids (as with congestion) | - |
| introversive | 18 | directed inward; marked by interest in yourself or concerned with inner feelings | - |
| introjective | 24 | - | - |
| intromissive | 17 | - | - |
| irresolvable | 17 | - | - |
| irrespirable | 16 | - | - |
| irresponsive | 17 | - | - |
| isoprenaline | 14 | - | - |
| irreflective | 20 | - | - |
| irreformable | 19 | - | - |
