9-letter words containing a, u, s, o
- clangours — Plural form of clangour.
- club soda — Club soda is fizzy water used for mixing with alcoholic drinks and fruit juice.
- club sofa — a heavily upholstered sofa having solid sides and a low back.
- co-equals — equal with another or each other in rank, ability, extent, etc.: The two top students were coequal.
- coagulase — any enzyme that causes coagulation of blood
- coalhouse — a shed or building for storing coal
- coauthors — Plural form of coauthor.
- cobaltous — of or containing cobalt in the divalent state
- cocoanuts — Plural form of cocoanut.
- comitatus — a retinue of warriors serving a leader, esp in pre-Christian Germanic cultures, such as Anglo-Saxon England and Viking Age Scandinavia
- construal — an act of construing
- consulage — a duty paid by merchants for a consul's protection of their goods while abroad
- consulate — A consulate is the place where a consul works.
- consumate — Misspelling of consummate.
- copulates — Third-person singular simple present indicative form of copulate.
- coruscant — giving off flashes of light
- coruscate — to emit flashes of light; sparkle
- cosmonaut — A cosmonaut is an astronaut from the former Soviet Union.
- courantes — Plural form of courante.
- courtesan — In former times, a courtesan was a woman who had sexual relationships with rich and powerful men for money.
- cousinage — a kinship or relationship
- crapulous — characterized by intemperance, esp. in drinking; debauched
- crash out — If someone crashes out somewhere, they fall asleep where they are because they are very tired or drunk.
- craterous — of, relating to, or resembling a crater
- croustade — a hollowed pastry case or piece of cooked bread, potato, etc, in which food is served
- crusadoes — Plural form of crusado.
- cupboards — Plural form of cupboard.
- curassows — Plural form of curassow.
- cursorial — adapted for running
- custodial — Custodial means relating to keeping people in prison.
- custodian — The custodian of an official building, a companies' assets, or something else valuable is the person who is officially in charge of it.
- customary — Customary is used to describe things that people usually do in a particular society or in particular circumstances.
- cutaneous — of, relating to, or affecting the skin
- dacquoise — a cake with nut meringue layers and buttercream
- dalhousie — 9th Earl of, title of George Ramsay. 1770–1838, British general; governor of the British colonies in Canada (1819–28)
- dangerous — If something is dangerous, it is able or likely to hurt or harm you.
- deadhouse — a mortuary
- deiparous — giving birth to a god
- dialogues — Plural form of dialogue.
- diandrous — (of some flowers or flowering plants) having two stamens
- dicacious — teasing and cheeky in the way one speaks
- dinosaurs — any chiefly terrestrial, herbivorous or carnivorous reptile of the extinct orders Saurischia and Ornithischia, from the Mesozoic Era, certain species of which are the largest known land animals.
- disfavour — unfavorable regard; displeasure; disesteem; dislike: The prime minister incurred the king's disfavor.
- docu-soap — a television documentary series in which the lives of the people filmed are presented as entertainment or drama
- docusoaps — Plural form of docusoap.
- duathlons — Plural form of duathlon.
- durations — Plural form of duration.
- eastabout — in, to, or towards the east
- eastbound — traveling, proceeding, or headed east: an eastbound train.
- edematous — effusion of serous fluid into the interstices of cells in tissue spaces or into body cavities.