8-letter words ending with M
Dive into the specific realm of 8-letter words that conclude with the letter M. This focused section reveals the fascinating ways in which words of this particular length, ending with M, 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 |
|---|---|---|---|
| bathroom | 15 | a room or building equipped with one or more toilets | - |
| platform | 15 | a woman's shoe with a very high thick sole | - |
| restroom | 10 | a toilet that is available to the public | - |
| telegram | 11 | a message transmitted by telegraph | - |
| mushroom | 15 | a large cloud of rubble and dust shaped like a mushroom and rising into the sky after an explosion (especially of a nuclear bomb) | - |
| organism | 11 | a living thing that has (or can develop) the ability to act or function independently | - |
| aquarium | 19 | a tank or pool or bowl filled with water for keeping live fish and underwater animals | - |
| washroom | 16 | a lavatory (particularly a lavatory in a public place) | - |
| ballroom | 12 | large room used mainly for dancing | - |
| platinum | 12 | a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits | - |
| exorcism | 19 | freeing from evil spirits | - |
| aluminum | 12 | a silvery ductile metallic element found primarily in bauxite | - |
| momentum | 14 | an impelling force or strength | the car's momentum carried it off the road |
| intercom | 12 | a communication system linking different rooms within a building or ship etc | - |
| titanium | 10 | a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite | - |
| spectrum | 14 | a broad range of related objects or values or qualities or ideas or activities | - |
| optimism | 14 | a general disposition to expect the best in all things | - |
| tapeworm | 15 | ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates | - |
| proclaim | 14 | state or announce | The King will proclaim an amnesty |
| homeroom | 15 | a classroom in which all students in a particular grade (or in a division of a grade) meet at certain times under the supervision of a teacher who takes attendance and does other administrative business | - |
| aneurysm | 13 | a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | - |
| paradigm | 14 | the class of all items that can be substituted into the same position (or slot) in a grammatical sentence (are in paradigmatic relation with one another) | - |
| heirloom | 13 | (law) any property that is considered by law or custom as inseparable from an inheritance is inherited with that inheritance | - |
| daydream | 15 | absentminded dreaming while awake | - |
| showroom | 16 | an area where merchandise (such as cars) can be displayed | in Britain a showroom is called a salesroom |
| coliseum | 12 | an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | - |
| delirium | 11 | state of violent mental agitation | - |
| cynicism | 17 | a cynical feeling of distrust | - |
| upstream | 12 | toward the source or against the current | - |
| darkroom | 15 | a room in which photographs are developed | - |
| pendulum | 13 | an apparatus consisting of an object mounted so that it swings freely under the influence of gravity | - |
| hologram | 14 | the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography | - |
| bookworm | 19 | a person who pays more attention to formal rules and book learning than they merit | - |
| feminism | 15 | the movement aimed at equal rights for women | - |
| lukewarm | 17 | moderately warm | he hates lukewarm coffee |
| ammonium | 14 | the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion | - |
| idealism | 11 | elevated ideals or conduct; the quality of believing that ideals should be pursued | - |
| emporium | 14 | a large retail store organized into departments offering a variety of merchandise; commonly part of a retail chain | - |
| newsroom | 13 | an office in which news is processed by a newspaper or news agency or television or radio station | - |
| chromium | 17 | a hard brittle multivalent metallic element; resistant to corrosion and tarnishing | - |
| backroom | 18 | the meeting place of a group of leaders who make their decisions via private negotiations | - |
| activism | 15 | a policy of taking direct action to achieve a political or social goal | - |
| laudanum | 11 | narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient | - |
| seraphim | 15 | - | - |
| solarium | 10 | a room enclosed largely with glass and affording exposure to the sun | - |
| linoleum | 10 | a floor covering | - |
| verbatim | 15 | in precisely the same words used by a writer or speaker | repeated their dialog verbatim |
| embolism | 14 | an insertion into a calendar | - |
| moonbeam | 14 | a ray of moonlight | - |
| workroom | 17 | room where work is done | - |
| playroom | 15 | a recreation room for noisy activities (parties or children's play etc) | - |
| altruism | 10 | the quality of unselfish concern for the welfare of others | - |
| humanism | 15 | the doctrine that people's duty is to promote human welfare | - |
| chatroom | 15 | a site on the internet where a number of users can communicate in real time (typically one dedicated to a particular topic) | - |
| hedonism | 14 | an ethical system that evaluates the pursuit of pleasure as the highest good | - |
| sonogram | 11 | an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs | - |
| kilogram | 15 | one thousand grams; the basic unit of mass adopted under the Systeme International d'Unites | a kilogram is approximately 2.2 pounds |
| cardamom | 15 | aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | - |
| ringworm | 14 | infections of the skin or nails caused by fungi and appearing as itching circular patches | - |
| satanism | 10 | a belief in and reverence for devils (especially Satan) | - |
| speculum | 14 | a medical instrument for dilating a bodily passage or cavity in order to examine the interior | - |
| addendum | 13 | textual matter that is added onto a publication; usually at the end | - |
| cerebrum | 14 | anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans | - |
| escapism | 14 | an inclination to retreat from unpleasant realities through diversion or fantasy | his alcohol problem was a form of escapism |
| paganism | 13 | any of various religions other than Christianity or Judaism or Islamism | - |
| anteroom | 10 | a large entrance or reception room or area | - |
| underarm | 11 | with hand brought forward and up from below shoulder level | - |
| reaffirm | 16 | affirm once again | He reaffirmed his faith in the church |
| woodworm | 17 | a larva of a woodborer | - |
| selenium | 10 | a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite) | - |
| silkworm | 17 | larva of a saturniid moth; spins a large amount of strong silk in constructing its cocoon | - |
| geranium | 11 | any of numerous plants of the family Geraniaceae | - |
| diazepam | 22 | a tranquilizer (trade name Valium) used to relieve anxiety and relax muscles; acts by enhancing the inhibitory actions of the neurotransmitter GABA; can also be used as an anticonvulsant drug in cases of nerve agent poisoning | - |
| wardroom | 14 | military quarters for dining and recreation for officers of a warship (except the captain) | - |
| phantasm | 15 | something existing in perception only | - |
| nihilism | 13 | the delusion that things (or everything, including the self) do not exist; a sense that everything is unreal | - |
| cherubim | 17 | - | - |
| stoicism | 12 | an indifference to pleasure or pain | - |
| polonium | 12 | a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor | - |
| accustom | 14 | make psychologically or physically used (to something) | - |
| duodenum | 12 | the part of the small intestine between the stomach and the jejunum | - |
| dynamism | 16 | the activeness of an energetic personality | - |
| sickroom | 16 | a room to which a sick person is confined | - |
| perineum | 12 | the general region between the anus and the genital organs | - |
| pacifism | 17 | the doctrine that all violence is unjustifiable | - |
| aneurism | 10 | a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | - |
| aconitum | 12 | genus of poisonous plants of temperate regions of northern hemisphere with a vaulted and enlarged petal | - |
| futurism | 13 | an artistic movement in Italy around 1910 that tried to express the energy and values of the machine age | - |
| monogram | 13 | a graphic symbol consisting of 2 or more letters combined (usually your initials); printed on stationery or embroidered on clothing | - |
| botulism | 12 | food poisoning from ingesting botulin; not infectious; affects the CNS; can be fatal if not treated promptly | - |
| marjoram | 19 | aromatic Eurasian perennial | - |
| nepotism | 12 | favoritism shown to relatives or close friends by those in power (as by giving them jobs) | - |
| coatroom | 12 | a room where coats and other articles can be left temporarily | - |
| whoredom | 17 | offering sexual intercourse for pay | - |
| rubidium | 13 | a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite | - |
| pugilism | 13 | fighting with the fists | - |
| disclaim | 13 | make a disclaimer about | He disclaimed any responsibility |
| lyricism | 15 | the property of being suitable for singing | - |
| telefilm | 13 | a movie that is made to be shown on television | - |
| paroxysm | 22 | a sudden uncontrollable attack | a paroxysm of giggling |
| plectrum | 14 | a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument | - |
| populism | 14 | the political doctrine that supports the rights and powers of the common people in their struggle with the privileged elite | - |
| poppadom | 17 | - | - |
| priapism | 14 | condition in which the penis is continually erect; usually painful and seldom with sexual arousal | - |
| albinism | 12 | the congenital absence of pigmentation in the eyes and skin and hair | - |
| dwarfism | 17 | a genetic abnormality resulting in short stature | - |
| fatalism | 13 | a philosophical doctrine holding that all events are predetermined in advance for all time and human beings are powerless to change them | - |
| hypogeum | 19 | - | - |
| capsicum | 16 | chiefly tropical perennial shrubby plants having many-seeded fruits: sweet and hot peppers | - |
| thallium | 13 | a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores | - |
| rowdyism | 17 | rowdy behavior | - |
| aphorism | 15 | a short pithy instructive saying | - |
| flatworm | 16 | parasitic or free-living worms having a flattened body | - |
| inchworm | 18 | small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae | - |
| giantism | 11 | excessive largeness of stature | - |
| glowworm | 17 | the luminous larva or wingless grub-like female of a firefly | - |
| supermom | 14 | an informal term for a mother who can combine childcare and full-time employment | - |
| tantalum | 10 | a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite | - |
| pleonasm | 12 | using more words than necessary | - |
| poolroom | 12 | a room with pool tables where pool is played | - |
| refugium | 14 | - | - |
| alpinism | 12 | mountain climbing (not restricted to the Alps) | - |
| ideogram | 12 | a graphic character that indicates the meaning of a thing without indicating the sounds used to say it | Chinese characters are ideograms |
| imperium | 14 | the domain ruled by an emperor or empress; the region over which imperial dominion is exercised | - |
| chiliasm | 15 | belief in the Christian doctrine of the millennium mentioned in the Book of Revelations | - |
| cronyism | 15 | favoritism shown to friends and associates (as by appointing them to positions without regard for their qualifications) | - |
| ununbium | 12 | a radioactive transuranic element | - |
| untruism | 10 | - | - |
| unseldom | 11 | - | - |
| ursiform | 13 | - | - |
| urbanism | 12 | - | - |
| unwisdom | 14 | - | - |
| waveform | 19 | the shape of a wave illustrated graphically by plotting the values of the period quantity against time | - |
| wareroom | 13 | - | - |
| whipworm | 21 | - | - |
| wireworm | 16 | wormlike larva of various elaterid beetles; feeds on roots of many crop plants | - |
| womanism | 15 | - | - |
| zaddikim | 25 | - | - |
| zoosperm | 21 | - | - |
| zooecium | 21 | - | - |
| zombiism | 23 | - | - |
| xeraphim | 22 | - | - |
| yahooism | 16 | - | - |
| xanthism | 20 | - | - |
| veratrum | 13 | a genus of coarse poisonous perennial herbs; sometimes placed in subfamily Melanthiaceae | - |
| venogram | 14 | an X ray of a vein injected with a radiopaque contrast medium | - |
| venidium | 14 | - | - |
| vexillum | 20 | - | - |
| viburnum | 15 | deciduous or evergreen shrubs or small trees: arrow-wood; wayfaring tree | - |
| viaticum | 15 | - | - |
| variorum | 13 | an edition containing various versions of a text or notes by various scholars or editors | - |
| variform | 16 | varying in form or shape | - |
| vanadium | 14 | a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite | - |
| velarium | 13 | - | - |
| vasculum | 15 | - | - |
| vasiform | 16 | constituting a tube; having hollow tubes (as for the passage of fluids) | - |
| veganism | 14 | - | - |
| voltaism | 13 | - | - |
| vivarium | 16 | an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions | - |
| vocalism | 15 | the sound made by the vibration of vocal folds modified by the resonance of the vocal tract | - |
| vinculum | 15 | - | - |
| villadom | 14 | - | - |
| videndum | 15 | - | - |
| vitalism | 13 | (philosophy) a doctrine that life is a vital principle distinct from physics and chemistry | - |
| virilism | 13 | the development of male secondary sexual characteristics in a female (or prematurely in a young boy) | - |
| zymogram | 25 | - | - |
| striatum | 10 | a striped mass of white and grey matter located in front of the thalamus in each cerebral hemisphere; consists of the caudate nucleus and the lenticular nucleus | - |
| studfarm | 14 | - | - |
| strabism | 12 | - | - |
| sudarium | 11 | - | - |
| subclaim | 14 | - | - |
| swelldom | 14 | - | - |
| swingism | 14 | - | - |
| taghairm | 14 | - | - |
| taleysim | 13 | - | - |
| tallisim | 10 | - | - |
| tallitim | 10 | - | - |
| syconium | 15 | the fleshy multiple fruit of the fig consisting of an enlarged hollow receptacle containing numerous fruitlets | - |
| sybotism | 15 | - | - |
| teetotum | 10 | a conical child's plaything tapering to a steel point on which it can be made to spin | - |
| tenendum | 11 | - | - |
| tautonym | 13 | - | - |
| tantrism | 10 | doctrine of enlightenment as the realization of the oneness of one's self and the visible world; combines elements of Hinduism and paganism including magical and mystical elements like mantras and mudras and erotic rites; especially influential in Tibet | - |
| thraldom | 14 | the state of being under the control of another person | - |
| teratism | 10 | - | - |
| teraphim | 15 | - | - |
| thanedom | 14 | - | - |
| testatum | 10 | - | - |
| toadyism | 14 | - | - |
| titanism | 10 | - | - |
| tomentum | 12 | filamentous hairlike growth on a plant | - |
| tomogram | 13 | - | - |
| tokenism | 14 | - | - |
| thuggism | 15 | - | - |
| timpanum | 14 | - | - |
| tigerism | 11 | - | - |
| tillicum | 12 | - | - |
| toolroom | 10 | - | - |
| totalism | 10 | the principle of complete and unrestricted power in government | - |
| totemism | 12 | belief in the kinship of a group of people with a common totem | - |
| triticum | 12 | annual cereal grasses from Mediterranean area; widely cultivated in temperate regions | - |
| troilism | 10 | - | - |
| triadism | 11 | - | - |
| trialism | 10 | - | - |
| trillium | 10 | any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower | - |
| tutorism | 10 | - | - |
| tympanum | 17 | a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it | - |
| tubeworm | 15 | - | - |
| tubiform | 15 | - | - |
| unciform | 15 | - | - |
| undinism | 11 | - | - |
| ultraism | 10 | - | - |
| unbeseem | 12 | - | - |
| unionism | 10 | the system or principles and theory of labor unions | - |
| splenium | 12 | - | - |
| rigorism | 11 | - | - |
| rightism | 14 | the ideology of the political right; belief in or support of the tenets of the political right | - |
| rotiform | 13 | - | - |
| royalism | 13 | adherence or attachment to a monarchy or to the principle of monarchal government | - |
| robotism | 12 | - | - |
| rosarium | 10 | - | - |
| rootworm | 13 | - | - |
| samarium | 12 | a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite | - |
| saleroom | 10 | an area where merchandise (such as cars) can be displayed | - |
| sandworm | 14 | - | - |
| ruralism | 10 | a rural characteristic or trait | - |
| saintism | 10 | - | - |
| sailroom | 10 | - | - |
| saintdom | 11 | - | - |
| sacellum | 12 | - | - |
| saeculum | 12 | - | - |
| scandium | 13 | a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite | - |
| scalprum | 14 | - | - |
| schiedam | 16 | - | - |
| schellum | 15 | - | - |
| sapphism | 17 | female homosexuality | - |
| savagism | 14 | - | - |
| scribism | 14 | - | - |
| sealyham | 16 | a wire-haired terrier with short legs that was first bred in Sealyham | - |
| scybalum | 17 | - | - |
| scholium | 15 | a marginal note written by a scholiast (a commentator on ancient or classical literature) | - |
| sciolism | 12 | pretentious superficiality of knowledge | - |
| seriatim | 10 | - | - |
| secundum | 13 | - | - |
| seismism | 12 | - | - |
| sedilium | 11 | - | - |
| shekelim | 17 | - | - |
| shekalim | 17 | - | - |
| sheikdom | 18 | the domain ruled by a sheik | - |
| sheqalim | 22 | - | - |
| shipworm | 18 | wormlike marine bivalve that bores into wooden piers and ships by means of drill-like shells | - |
| setiform | 13 | - | - |
| shamosim | 15 | - | - |
| sierozem | 19 | - | - |
| siddurim | 12 | - | - |
| silphium | 15 | tall North American perennial herbs | - |
| simplism | 14 | a simplification that goes too far (to the point of misrepresentation) | - |
| silicium | 12 | - | - |
| shortarm | 13 | - | - |
| shloshim | 16 | - | - |
| shkotzim | 26 | - | - |
| simulium | 12 | type genus of the Simuliidae: blackflies | - |
| sinapism | 12 | a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient | - |
| skiagram | 15 | a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays) | - |
| slipform | 15 | - | - |
| slowworm | 16 | small burrowing legless European lizard with tiny eyes; popularly believed to be blind | - |
| solecism | 12 | a socially awkward or tactless act | - |
| solidism | 11 | - | - |
| solarism | 10 | - | - |
| solatium | 10 | - | - |
| sopherim | 15 | - | - |
| somatism | 12 | - | - |
| snobbism | 14 | the trait of condescending to those of lower social status | - |
| spekboom | 18 | - | - |
| spiculum | 14 | small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals | - |
| sphagnum | 16 | any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat | - |
| soredium | 11 | - | - |
| spanworm | 15 | - | - |
| renogram | 11 | - | - |
| reniform | 13 | (of a leaf or bean shape) resembling the shape of kidney | - |
| reinform | 13 | - | - |
| retronym | 13 | a word introduced because an existing term has become inadequate | Nobody ever heard of analog clocks until digital clocks became common, so `analog clock' is a retronym |
| retiform | 13 | - | - |
| residuum | 11 | something left after other parts have been taken away | - |
| partyism | 15 | - | - |
| paspalum | 14 | tall tufted perennial tropical American grass naturalized as pasture and forage grass in southern United States | - |
| pashadom | 16 | - | - |
| patagium | 13 | - | - |
| pappadom | 17 | - | - |
| pappadam | 17 | - | - |
| paraform | 15 | - | - |
| papalism | 14 | - | - |
| parecism | 14 | - | - |
| paragram | 13 | - | - |
| pelorism | 12 | - | - |
| peridium | 13 | outer layer of the spore-bearing organ in many fungi | - |
| periderm | 13 | - | - |
| periblem | 14 | - | - |
| peponium | 14 | - | - |
| peculium | 14 | - | - |
| pediform | 16 | - | - |
| phrenism | 15 | - | - |
| philtrum | 15 | - | - |
| phormium | 17 | - | - |
| phonecam | 17 | - | - |
| picogram | 15 | - | - |
| picloram | 14 | - | - |
| piciform | 17 | - | - |
| pichurim | 17 | - | - |
| pessimum | 14 | of an organism's environment; least favorable for survival | - |
| phallism | 15 | - | - |
| phenogam | 16 | - | - |
| petalism | 12 | - | - |
| peyotism | 15 | - | - |
| placitum | 14 | - | - |
| pisiform | 15 | a small wrist bone that articulates only with the triquetral | - |
| plastrum | 12 | - | - |
| plateasm | 12 | - | - |
| planform | 15 | - | - |
| piriform | 15 | - | - |
| pillworm | 15 | - | - |
| piliform | 15 | - | - |
| pipestem | 14 | - | - |
| polonism | 12 | - | - |
| polyonym | 18 | - | - |
| pliofilm | 15 | - | - |
| plumbism | 16 | toxic condition produced by the absorption of excessive lead into the system | - |
| postform | 15 | - | - |
| poppadum | 17 | - | - |
| priggism | 14 | - | - |
| proprium | 14 | - | - |
| prosaism | 12 | - | - |
| psychism | 20 | - | - |
| psellism | 12 | - | - |
| psephism | 17 | - | - |
| ptyalism | 15 | excessive flow of saliva | - |
| psyllium | 15 | plantain of Mediterranean regions whose seeds swell and become gelatinous when moist and are used as a mild laxative | - |
| pronotum | 12 | - | - |
| pygidium | 17 | - | - |
| pygmyism | 21 | - | - |
| pyriform | 18 | - | - |
| pyxidium | 23 | fruit of such plants as the plantain; a capsule whose upper part falls off when the seeds are released | - |
| qabalism | 21 | - | - |
| quackism | 25 | - | - |
| qaimaqam | 30 | - | - |
| pulpitum | 14 | - | - |
| pullorum | 12 | - | - |
| pudendum | 14 | human external genital organs collectively especially of a female | - |
| puppydom | 20 | - | - |
| puppyism | 19 | - | - |
| puppodum | 17 | - | - |
| puparium | 14 | - | - |
| racemism | 14 | - | - |
| ramentum | 12 | - | - |
| ramiform | 15 | - | - |
| queerdom | 20 | - | - |
| queendom | 20 | - | - |
| quietism | 19 | a form of religious mysticism requiring withdrawal from all human effort and passive contemplation of God | - |
| rebeldom | 13 | - | - |
| ranarium | 10 | - | - |
| raniform | 13 | - | - |
| rehoboam | 15 | - | - |
| regalism | 11 | - | - |
| outvenom | 13 | - | - |
| overcram | 15 | - | - |
| overbrim | 15 | - | - |
| paliform | 15 | - | - |
| panislam | 12 | - | - |
| paludism | 13 | - | - |
| oxazepam | 28 | a tranquilizing drug (trade name Serax) used to treat anxiety and insomnia and alcohol withdrawal | - |
| overteem | 13 | - | - |
| overswum | 16 | - | - |
| overswim | 16 | - | - |
| overswam | 16 | - | - |
| overwarm | 16 | - | - |
| overtrim | 13 | - | - |
| pagandom | 14 | - | - |
| paeanism | 12 | - | - |
| pachadom | 18 | - | - |
| anestrum | 10 | applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | - |
| angstrom | 11 | a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation | - |
| allodium | 11 | - | - |
| alluvium | 13 | clay or silt or gravel carried by rushing streams and deposited where the stream slows down | - |
| aquafarm | 22 | - | - |
| apterism | 12 | - | - |
| apterium | 12 | - | - |
| apothegm | 16 | a short pithy instructive saying | - |
| antispam | 12 | - | - |
| antiatom | 10 | - | - |
| antifoam | 13 | - | - |
| ascidium | 13 | - | - |
| aspidium | 13 | - | - |
| archaism | 15 | the use of an archaic expression | - |
| arciform | 15 | forming or resembling an arch | - |
| armyworm | 18 | moth whose destructive larvae travel in multitudes | - |
| argentum | 11 | - | - |
| autecism | 12 | - | - |
| auriform | 13 | having a shape resembling an ear | - |
| axoplasm | 19 | - | - |
| atheneum | 13 | a literary or scientific association for the promotion of learning | - |
| asterism | 10 | (astronomy) a cluster of stars (or a small constellation) | - |
| atropism | 12 | - | - |
| atticism | 12 | - | - |
| babeldom | 15 | - | - |
| babelism | 14 | - | - |
| bdellium | 13 | aromatic gum resin; similar to myrrh | - |
| basidium | 13 | a small club-shaped structure typically bearing four basidiospores at the ends of minute projections; unique to basidiomycetes | - |
| barogram | 13 | - | - |
| bathmism | 17 | - | - |
| bioplasm | 14 | - | - |
| binarism | 12 | - | - |
| birdfarm | 16 | - | - |
| birthdom | 16 | - | - |
| betacism | 14 | - | - |
| biennium | 12 | - | - |
| bluestem | 12 | tall grass with smooth bluish leaf sheaths grown for hay in the United States | - |
| bogeyism | 16 | - | - |
| blackgum | 19 | - | - |
| blokedom | 17 | - | - |
| bothrium | 15 | - | - |
| brachium | 17 | (biology) a branching or armlike part of an animal | - |
| boyarism | 15 | - | - |
| boobyism | 17 | - | - |
| bollworm | 15 | any of various moth caterpillars that destroy cotton bolls | - |
| brockram | 18 | - | - |
| brunizem | 21 | - | - |
| brougham | 16 | a sedan that has no roof over the driver's seat | - |
| cabalism | 14 | adherence to some extreme traditional theological concept or interpretation | - |
| bullyism | 15 | - | - |
| aerobium | 12 | - | - |
| aerogram | 11 | a letter sent by air mail | - |
| aecidium | 13 | - | - |
| aeriform | 13 | resembling air or having the form of air | - |
| achenium | 15 | - | - |
| aciculum | 14 | - | - |
| acosmism | 14 | - | - |
| actinium | 12 | a radioactive element of the actinide series; found in uranium ores | - |
| acrotism | 12 | - | - |
| actinism | 12 | the property of radiation that enables it to produce photochemical effects | - |
| alburnum | 12 | - | - |
| alarmism | 12 | needless warnings | - |
| alastrim | 10 | a mild form of smallpox caused by a less virulent form of the virus | - |
| allelism | 10 | - | - |
| algorism | 11 | computation with Arabic figures | - |
| alienism | 10 | the quality of being alien | - |
| ageratum | 11 | rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium | - |
| duncedom | 14 | - | - |
| dybbukim | 22 | - | - |
| druidism | 12 | the system of religion and philosophy taught by the Druids and their rites and ceremonies | - |
| drudgism | 13 | - | - |
| electrum | 12 | an alloy of gold and silver | - |
| ebionism | 12 | - | - |
| ectoderm | 13 | the outer germ layer that develops into skin and nervous tissue | - |
| echogram | 16 | an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs | - |
| encomium | 14 | a formal expression of praise | - |
| endemism | 13 | nativeness by virtue of originating or occurring naturally (as in a particular place) | - |
| endoderm | 12 | the inner germ layer that develops into the lining of the digestive and respiratory systems | - |
| entoderm | 11 | the inner germ layer that develops into the lining of the digestive and respiratory systems | - |
| entryism | 13 | - | - |
| episperm | 14 | protective outer layer of seeds of flowering plants | - |
| ensiform | 13 | shaped like a sword blade | the iris has an ensiform leaf |
| etherism | 13 | - | - |
| ethicism | 15 | a doctrine that ethics and ethical ideas are valid and important | his ethicism often led him to moralize |
| ethnonym | 16 | - | - |
| ethogram | 14 | - | - |
| euphuism | 15 | an elegant style of prose of the Elizabethan period; characterized by balance and antithesis and alliteration and extended similes with and allusions to nature and mythology | - |
| europium | 12 | a bivalent and trivalent metallic element of the rare earth group | - |
| eugenism | 11 | - | - |
| eulogium | 11 | a formal expression of praise for someone who has died recently | - |
| eumerism | 12 | - | - |
| ergogram | 12 | - | - |
| ergotism | 11 | poisoning by ingestion of ergot-infected grain products; characterized by thirst and diarrhea and nausea and cramping and vomiting and abnormal cardiac rhythms; in severe cases it can cause seizures and gangrene of the limbs | - |
| erethism | 13 | an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part | - |
| epizoism | 21 | - | - |
| eryngium | 14 | large genus of decorative plants with thistlelike flower heads; cosmopolitan in distribution | - |
| exordium | 18 | (rhetoric) the introductory section of an oration or discourse | - |
| exoplasm | 19 | - | - |
| extremum | 19 | the point located farthest from the middle of something | - |
| exanthem | 20 | eruption on the skin occurring as a symptom of a disease | - |
| exemplum | 21 | - | - |
| fakirism | 17 | - | - |
| fairydom | 17 | - | - |
| fairyism | 16 | - | - |
| factotum | 15 | a servant employed to do a variety of jobs | - |
| faradism | 14 | - | - |
| familism | 15 | - | - |
| finitism | 13 | - | - |
| filiform | 16 | thin in diameter; resembling a thread | - |
| finalism | 13 | - | - |
| fishworm | 19 | terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers | - |
| fireworm | 16 | - | - |
| fireroom | 13 | (nautical) chamber or compartment in which the furnaces of a ship are stoked or fired | - |
| flimflam | 18 | a swindle in which you cheat at gambling or persuade a person to buy worthless property | - |
| fluidram | 14 | a British imperial capacity measure (liquid or dry) equal to 60 minims or 3.5516 cubic centimeters | - |
| foredoom | 14 | doom beforehand | - |
| fogeydom | 18 | - | - |
| fogeyism | 17 | - | - |
| foreboom | 15 | - | - |
| francium | 15 | a radioactive element of the alkali-metal group discovered as a disintegration product of actinium | - |
| frenulum | 13 | - | - |
