9-letter words containing o, r, s, i
- boresight — to verify the alignment of the sights and bore of (a firearm).
- borgesian — of Jorge Luis Borges or his works
- boris iii — 1894–1943, king of Bulgaria 1918–43.
- bourgeois — If you describe people, their way of life, or their attitudes as bourgeois, you disapprove of them because you consider them typical of conventional middle-class people.
- bowstring — the string of an archer's bow, usually consisting of three strands of hemp
- boxercise — a system of sustained exercises combining boxing movements with aerobic activities
- brighouse — a town in N England, in Calderdale unitary authority, West Yorkshire: machine tools, textiles, engineering. Pop: 32 360 (2001)
- brimstone — Brimstone is the same as sulphur.
- brimstony — of, relating to or resembling brimstone; sulphurous
- broadside — A broadside is a strong written or spoken attack on a person or institution.
- broadwise — breadthwise
- broccolis — a form of a cultivated cruciferous plant, Brassica oleracea botrytis, whose leafy stalks and clusters of usually green buds are eaten as a vegetable.
- bromeosin — eosin (def 1).
- bronxites — the, a borough of New York City, N of Manhattan. 43.4 sq. mi. (112 sq. km).
- brookings — Robert Somers [suhm-erz] /ˈsʌm ərz/ (Show IPA), 1850–1932, U.S. merchant and philanthropist.
- bursiform — shaped like a pouch or sac
- c rations — tinned food formerly issued in packs to US soldiers
- canonries — Plural form of canonry.
- caparison — a decorated covering for a horse or other animal, esp (formerly) for a warhorse
- caprioles — Plural form of capriole.
- carbolise — phenolate (def 2).
- carbonise — Non-Oxford British standard spelling of carbonize.
- carillons — Plural form of carillon.
- cariosity — (medicine) caries.
- carnosity — an abnormal fleshy protrusion growing on any part of the body
- carousing — to engage in a drunken revel: They caroused all night.
- caryopsis — a dry seedlike fruit having the pericarp fused to the seed coat of the single seed: produced by the grasses
- cast iron — Cast iron is iron which contains a small amount of carbon. It is hard and cannot be bent so it has to be made into objects by casting.
- cast-iron — made of cast iron.
- castroism — the philosophy and policies of Fidel Castro and his followers
- castroist — of or relating to the philosophy and policies of Fidel Castro and his followers
- censorial — an official who examines books, plays, news reports, motion pictures, radio and television programs, letters, cablegrams, etc., for the purpose of suppressing parts deemed objectionable on moral, political, military, or other grounds.
- censorian — relating to the official supervision of public behaviour and morals
- censoring — any person who supervises the manners or morality of others.
- centroids — Plural form of centroid.
- certosina — a technique of inlaying light-colored material, as bone, ivory, metal, or pale wood, in elaborate designs on a dark ground.
- charolais — a breed of large white beef cattle that originated in France
- chemisorb — to take up (a substance) by chemisorption
- chlorides — Plural form of chloride.
- chlorites — Plural form of chlorite.
- chlorosis — a disorder, formerly common in adolescent girls, characterized by pale greenish-yellow skin, weakness, and palpitation and caused by insufficient iron in the body
- choirboys — Plural form of choirboy.
- choralist — a person who sings in a chorus or ensemble
- chordwise — in the direction of an aerofoil chord
- choriambs — Plural form of choriamb.
- chorister — A chorister is a singer in a church choir.
- chorusing — Present participle of chorus.
- christoff — Boris. 1919–93, Bulgarian bass-baritone, noted esp for his performance in the title role of Mussorgsky's Boris Godunov
- cinderous — a partially or mostly burned piece of coal, wood, etc.
- cinereous — of a greyish colour