12-letter words containing r, o, t, a, u
- blabbermouth — a person who talks too much or indiscreetly
- boar-hunting — the practice of hunting wild boars
- boarding out — the local-authority practice of placing a client in a foster family or voluntary establishment and paying for it
- bottom quark — a type of quark with a mass of c. 4.7 to 5.3 GeV/c2, a negative charge that is 1⁄3 the charge of an electron, zero charm, and zero strangeness
- boulangerite — a bluish lead-gray mineral, lead antimony sulfide, Pb 5 Sb 4 S 11 , a minor ore of lead.
- brain tumour — a tumour that is situated in the brain
- breakthrough — A breakthrough is an important development or achievement.
- breastplough — a plough driven by the worker's breast, often used to pare turf
- breath group — a sequence of sounds articulated in the course of a single exhalation; an utterance or part of an utterance produced between pauses for breath.
- brontosaurus — any very large herbivorous quadrupedal dinosaur of the genus Apatosaurus, common in North America during Jurassic times, having a long neck and long tail: suborder Sauropoda (sauropods)
- bugger about — If someone buggers about or buggers around, they waste time doing unnecessary things.
- bullock cart — a cart pulled by one or two bullocks
- bunco artist — a confidence trickster or con artist
- burnt almond — a sweet consisting of an almond enclosed in burnt sugar
- burnt orange — of a dark orange colour, sometimes due to calcination of orange pigment
- burro's tail — a succulent Mexican plant, Sedum morganianum, of the stonecrop family, bearing small, rose-colored flowers and long, hanging, nearly cylindrical stems with closely packed whitish-green leaves.
- cacao butter — cocoa butter
- calumniators — Plural form of calumniator.
- calumniatory — of, involving, or using calumny; slanderous; defamatory.
- cantankerous — Someone who is cantankerous is always finding things to argue or complain about.
- capitulatory — the act of capitulating.
- card counter — a casino player who memorizes or records which cards have been played in previous hands in order to calculate the odds on receiving winning cards or combinations from those remaining to be dealt, the practice often being held as illegal.
- castor sugar — finely ground or powdered sugar.
- cater-cousin — a close friend
- caught short — having a sudden need to urinate or defecate
- centuriation — the process or act of dividing land into centuries or equal areas undertaken by the Romans
- chaetiferous — having bristles
- chapterhouse — the building attached to a cathedral, collegiate church, or religious house in which the chapter meets
- charterhouse — a Carthusian monastery
- chorusmaster — the conductor of a choir
- chota nagpur — a plateau in E India, mainly in Jharkhand state since 2000: forested, with rich mineral resources and much heavy industry; produces chiefly lac (world's leading supplier), coal (half India's total output), and mica
- choux pastry — a very light pastry made with eggs, used for eclairs, etc
- chukot range — mountain range in NE Siberia: highest peak, c. 7,500 ft (2,286 m)
- circulations — Plural form of circulation.
- circumrotary — Alternative form of circumrotatory.
- circumrotate — to turn like a wheel; rotate
- cirrostratus — a uniform layer of cloud above about 6000 metres (20 000 feet)
- claustration — the act of confining to a small space (usually a cloister)
- cocoa butter — a yellowish-white waxy solid that is obtained from cocoa beans and used for confectionery, soap, etc
- coconut crab — a large, terrestrial crab, Birgus latro, of islands in the South Pacific, that feeds on coconuts.
- colour chart — a chart with samples of paint colours
- colourations — Plural form of colouration.
- commensurate — If the level of one thing is commensurate with another, the first level is in proportion to the second.
- communicator — a person who communicates, especially one skilled at conveying information, ideas, or policy to the public.
- commuter tax — an income tax imposed by a locality on those who work within its boundaries but reside elsewhere.
- compulsatory — compulsory
- compurgation — (formerly) a method of trial whereby a defendant might be acquitted if a sufficient number of persons swore to his innocence
- computer age — modern society regarded as the period when the widespread use of computers has fundamentally changed people's lives
- computer law — a body of law arising out of the special conditions relating to the use of computers, as in computer crime or software copyright.
- conduct mark — (in school) a mark for behaviour