12-letter words containing s, e, n, a
- anzus treaty — Australia, New Zealand, and the United States, especially as associated in the mutual defense treaty (ANZUS Pact or ANZUS Treaty) of 1952.
- 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
- apparentness — The state or quality of being apparent.
- appellations — Plural form of appellation.
- appendencies — attached or suspended; annexed.
- appendicitis — Appendicitis is an illness in which a person's appendix is infected and painful.
- appetisement — appetite or hunger
- appetisingly — Alternative spelling of appetizingly.
- appointments — Plural form of appointment.
- appositeness — The state of being apposite.
- appraisement — the act of estimating or judging the nature or value of something or someone.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- apprehensive — Someone who is apprehensive is afraid that something bad may happen.
- apprentisage — Obsolete form of apprenticeage.
- aquaintances — Plural form of aquaintance.
- araneomorphs — Plural form of araneomorph.
- arborescence — treelike in size and form.
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- archdiocesan — Relating to an archdiocese.
- archenterons — Plural form of archenteron.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- arenaviruses — Plural form of arenavirus.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- ariel sharon — Ariel, 1928–2014, Israeli military and political leader; prime minister 2001–06.
- 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
- aristotelian — of or relating to Aristotle or his philosophy
- arm's-length — lacking intimacy or friendliness, esp when possessing some special connection, such as previous closeness
- arming chest — a chest for holding armor and weapons.
- arraignments — Plural form of arraignment.
- arrangements — preparatory measures taken or plans made; preparations
- arsenic acid — a white poisonous soluble crystalline solid used in the manufacture of arsenates and insecticides. Formula: H3AsO4
- arseniferous — Lb geology Containing or producing arsenic.
- arseniureted — combined with arsenic
- arseno group — the bivalent group −As=As−.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- arsphenamine — a drug containing arsenic, formerly used in the treatment of syphilis and related infections
- arthur evans — Sir Arthur John, 1851–1941, English archaeologist.
- arts student — a person studying an arts subject
- ascensionist — a person who has completed a mountain ascent, esp a notable one
- ascertaining — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- asclepiadean — of or relating to a type of classical verse line consisting of a spondee, two or three choriambs, and an iamb
- asking price — The asking price of something is the price which the person selling it says that they want for it, although they may accept less.
- asparaginase — an enzyme used in treating leukaemia
- aspiringness — the condition of being aspiring
- assassinated — Simple past tense and past participle of assassinate.
- assassinates — Third-person singular simple present indicative form of assassinate.
- assentaneous — having a tendency to agree, comply or acquiesce
- assertations — Plural form of assertation.
- asseverating — Present participle of asseverate.
- asseveration — the act of asseverating.