12-letter words containing a, i, o
- antique shop — a shop where antiques are sold
- antirational — opposed to rationalism
- antireformer — One who opposes reform.
- antireligion — opposed to religion
- antiroll bar — a horizontal bar in the suspension system of some automotive vehicles, that stabilizes the body of the vehicle and thereby reduces sway, esp. during turns
- antiromantic — opposed to romanticism
- antiroyalism — Opposition to royals or royalism.
- antiroyalist — opposed to the monarchy
- antisepalous — facing the sepals or calyx leaf
- antisociable — Antisocial.
- antisocially — In an antisocial manner.
- antistrophes — Plural form of antistrophe.
- antistrophic — Of or pertaining to an antistrophe.
- antistrophon — an argument that is retorted against an opponent
- antitakeover — opposed to or acting against a takeover
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- antitumoural — acting against or upon tumours
- antiviolence — opposed to or acting against violence in society
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- antoninianus — an ancient Roman coin made either of silver or bronze and equal in value to two denarii
- anxious seat — a bench near the preacher at revival meetings, for those with a troubled conscience who seek salvation
- aortic valve — a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.
- aortographic — relating to an aortography or aortography
- apagogically — in an apagogical manner
- apalachicola — river in NW Fla., flowing from the Fla.-Ga. border southward into the Gulf of Mexico: 90 mi (145 km)
- apeirophobia — The fear of infinity and/or of infinite things.
- aperiodicity — not periodic; irregular.
- aphoristical — Alternative form of aphoristic.
- aphrodisiacs — Plural form of aphrodisiac.
- apicomplexan — Describing protists of the phylum Apicomplexa.
- apocalyptist — the writer of the Apocalypse or a related work
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apodeictical — Apodeictic.
- apolitically — in an apolitical manner
- apostatizing — Present participle of apostatize.
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostolicity — the quality of being apostolic
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- apothegmatic — Relating to, or in the manner of, an apothegm; sententious; pithy.
- apotheosized — Simple past tense and past participle of apotheosize.
- apparitional — of or relating to an apparition or apparitions; ghostly, spectral
- appassionato — (to be performed) in an impassioned manner
- appellations — Plural form of appellation.
- apperception — the attainment of full awareness of a sensation or idea
- apple-polish — to curry favor with someone, especially in an obsequious or flattering manner.
- applications — Plural form of application.
- appoggiatura — an ornament consisting of a nonharmonic note (short or long) preceding a harmonic one either before or on the stress
- appointments — Plural form of appointment.