12-letter words that end in s
- apocynaceous — of, relating to, or belonging to the Apocynaceae, a family of mostly tropical flowering plants with latex in their stems, including the dogbane, periwinkle, oleander, and some lianas
- apothecaries — Plural form of apothecary.
- apparatchiks — a member of an apparat, especially in a Communist country.
- apparentness — The state or quality of being apparent.
- appellations — Plural form of appellation.
- appellatives — Plural form of appellative.
- appendencies — attached or suspended; annexed.
- appendicitis — Appendicitis is an illness in which a person's appendix is infected and painful.
- applications — Plural form of application.
- applied arts — arts that are put to practical use
- appointments — Plural form of appointment.
- appositeness — The state of being apposite.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- approbations — approval; commendation.
- appropriates — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximates — near or approaching a certain state, condition, goal, or standard.
- aquaintances — Plural form of aquaintance.
- aran islands — a group of three islands in the Atlantic, off the W coast of the Republic of Ireland: Aranmore or Inishmore (the largest), Inishmaan, and Inisheer. Pop: 1280 (2002). Area: 46 sq km (18 sq miles)
- araneomorphs — Plural form of araneomorph.
- arbitrageurs — Plural form of arbitrageur.
- arbitrations — Plural form of arbitration.
- archdioceses — Plural form of archdiocese.
- arched truss — a truss having an archlike form but unlike a true arch in that it is free to move horizontally at its base, as in expanding or contracting because of temperature changes.
- archenterons — Plural form of archenteron.
- archerfishes — Plural form of archerfish.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archipelagos — Plural form of archipelago.
- arenaviruses — Plural form of arenavirus.
- argillaceous — (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- armed forces — The armed forces or the armed services of a country are its military forces, usually the army, navy, marines, and air force.
- army surplus — used or unused articles of military clothing, equipment, etc previously allocated to or intended for the use of army personnel but now sold off to members of the public
- arquebusiers — harquebusier.
- arraignments — Plural form of arraignment.
- arrangements — preparatory measures taken or plans made; preparations
- arseniferous — Lb geology Containing or producing arsenic.
- arteriograms — Plural form of arteriogram.
- arthroscopes — Plural form of arthroscope.
- arthrospores — an isolated vegetative cell that has passed into a resting state, occurring in bacteria and not regarded as a true spore.
- arthrotomies — Plural form of arthrotomy.
- arthur evans — Sir Arthur John, 1851–1941, English archaeologist.
- articulators — Plural form of articulator.
- artillerists — Plural form of artillerist.
- artiodactyls — Plural form of artiodactyl.
- ascomycetous — belonging or pertaining to the Ascomycota.
- aspiringness — the condition of being aspiring
- assassinates — Third-person singular simple present indicative form of assassinate.
- assbackwards — in an order or way reverse from the usual: You've sewn the sleeve on assbackwards.
- assentaneous — having a tendency to agree, comply or acquiesce
- assertations — Plural form of assertation.