12-letter words containing o, r, a, i, u
- bunco artist — a confidence trickster or con artist
- bur marigold — any plant of the genus Bidens that has yellow flowers and pointed fruits that cling to fur and clothing: family Asteraceae (composites)
- burial mound — a barrow
- burkina faso — an inland republic in W Africa: dominated by Mossi kingdoms (10th–19th centuries); French protectorate established in 1896; became an independent republic in 1960; consists mainly of a flat savanna plateau. Official language: French; Mossi and other African languages also widely spoken. Religion: mostly animist, with a large Muslim minority. Currency: franc. Capital: Ouagadougou. Pop: 17 812 961 (2013 est). Area: 273 200 sq km (105 900 sq miles)
- 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.
- byelorussian — Byelorussian means belonging or relating to Byelorussia or to its people or culture.
- calumniators — Plural form of calumniator.
- calumniatory — of, involving, or using calumny; slanderous; defamatory.
- capitulatory — the act of capitulating.
- capriciously — subject to, led by, or indicative of a sudden, odd notion or unpredictable change; erratic: He's such a capricious boss I never know how he'll react.
- carillonneur — a person who plays a carillon
- carnivourous — Misspelling of carnivorous.
- cater-cousin — a close friend
- cauliflowers — Plural form of cauliflower.
- centuriation — the process or act of dividing land into centuries or equal areas undertaken by the Romans
- chaetiferous — having bristles
- child labour — the full-time employment of children below a minimum age laid down by statute
- chivalrously — having the qualities of chivalry, as courage, courtesy, and loyalty.
- chlorambucil — an alkylating drug derived from nitrogen mustard, administered orally in the treatment of leukaemia and other malignant diseases. Formula: C14H19Cl2NO2
- cichoraceous — relating to plants of the sub-order Cichoraceae
- circulations — Plural form of circulation.
- circumboreal — of or having to do with plants and animals inhabiting boreal regions of North America and Eurasia
- circumocular — surrounding the eye.
- 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)
- cladosporium — any of the species of fungi in the genus Cladosporium
- claustration — the act of confining to a small space (usually a cloister)
- coachbuilder — (historical) A builder of horse-drawn coaches.
- coal-burning — fuelled by burning coal
- cocurricular — of or relating to a joint curriculum
- colourations — Plural form of colouration.
- columnarized — columnar (def 3).
- communicator — a person who communicates, especially one skilled at conveying information, ideas, or policy to the public.
- compurgation — (formerly) a method of trial whereby a defendant might be acquitted if a sufficient number of persons swore to his innocence
- conductorial — relating to a conductor
- configurable — to design or adapt to form a specific configuration or for some specific purpose: The planes are being configured to hold more passengers in each row.
- configurated — to give a configuration, form, or design to.
- configurator — an item of software that enables or assists in the configuration of a product
- congruential — (mathematics) That uses congruency (division by a modulus).
- conjurations — Plural form of conjuration.
- connaisseurs — Plural form of connaisseur.
- conquistador — The conquistadors were the sixteenth-century Spanish conquerors of Central and South America.
- containerful — As much as a container can hold.
- contributary — contributory
- contriturate — to triturate completely
- conurbations — Plural form of conurbation.
- coram judice — before a court having the authority to hear and decide (the case in question).
- cork cambium — a layer of meristematic cells in the cortex of the stems and roots of woody plants, the outside of which gives rise to cork cells and the inside to secondary cortical cells (phelloderm)
- corrugations — the act or state of corrugating or of being corrugated.