12-letter words containing s, i, a, l, o
- anecdotalism — an inclination to relate anecdotes
- anemophilous — (of flowering plants such as grasses) pollinated by the wind
- angelologist — a person who studies angelology
- animalculous — a minute or microscopic animal, nearly or quite invisible to the naked eye, as an infusorian or rotifer.
- anisothermal — (thermodynamics) Of or pertaining to a system that is not in thermal equilibrium, that does not have a single fixed temperature.
- anthologised — Simple past tense and past participle of anthologise.
- anthologiser — Alternative spelling of anthologizer.
- anthologizes — Third-person singular simple present indicative form of anthologize.
- anthophilous — (esp of insects) frequenting flowers
- anticyclones — Plural form of anticyclone.
- antigropelos — waterproof leggings used to protect against mud
- antinovelist — a writer of antinovels
- antinucleons — Plural form of antinucleon.
- antipetalous — standing before the petals of a plant
- antipolitics — the rejection of party and electoral politics
- 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.
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- aphoristical — Alternative form of aphoristic.
- apocalyptist — the writer of the Apocalypse or a related work
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostolicity — the quality of being apostolic
- appellations — Plural form of appellation.
- apple-polish — to curry favor with someone, especially in an obsequious or flattering manner.
- applications — Plural form of application.
- appositional — the act of placing together or bringing into proximity; juxtaposition.
- archeologist — archaeology.
- archesporial — the primitive cell, or group of cells, that give rise to the cells from which spores are derived.
- archipelagos — Plural form of archipelago.
- arctophilist — a collector of teddy bears
- argillaceous — (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc
- ariel sharon — Ariel, 1928–2014, Israeli military and political leader; prime minister 2001–06.
- aristolochia — any of various plants of the genus Aristolochia of the family Aristolochiaceae
- aristotelian — of or relating to Aristotle or his philosophy
- arousability — to stimulate sexually.
- articulators — Plural form of articulator.
- artiodactyls — Plural form of artiodactyl.
- arts council — an organization that provides funding for a variety of arts activities
- aspirational — If you describe someone as aspirational, you mean that they have strong hopes of moving to a higher social status.
- assibilation — (linguistics) A sound change resulting in a sibilant consonant, commonly the final phase of palatalization.
- assimilation — an assimilating or being assimilated
- assimilators — Plural form of assimilator.
- assimilatory — characterized by assimilation; assimilating.
- assimulation — Obsolete form of assimilation.
- astacologist — a person who investigates and analyses crayfish
- astonishable — (obsolete) Astonishing.
- astoundingly — capable of overwhelming with amazement; stunningly surprising.