13-letter words containing a, r, u, s, i
- arundinaceous — resembling a reed
- assault rifle — a firearm that is capable of firing multiple rounds in a very short period
- astronautical — of or relating to astronautics or astronauts.
- atrabilarious — Characterized by melancholy or gloom.
- atrociousness — The state of being atrocious.
- aubervilliers — an industrial suburb of Paris, on the Seine. Pop: 63 136 (1999)
- audiographics — audiographic teleconferencing
- aum shinrikyo — a syncretistic Japanese cult combining elements of Buddhism, Hinduism, and Christianity, founded by Shoko Asahara in 1986; responsible for a number of murders and in particular a nerve-gas attack on the Tokyo underground in 1995
- australia day — a public holiday in Australia, commemorating the landing of the British in 1788: observed on January 26
- australianism — the Australian national character or spirit
- australianize — (esp of a new immigrant) to adopt or cause to adopt Australian habits and attitudes; integrate into Australian society
- austrian pine — an evergreen tree, Pina nigra austriaca
- austroasiatic — a family of languages spoken in SE Asia and the landsaround the Bay of Bengal and consisting principally of Vietnamese, Khmer, Mon, Khasi, Nicobarese, and the Munda languages.
- authorisation — Alternative spelling of authorization.
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autoeroticism — the arousal and use of one's own body as a sexual object, as through masturbation
- autorickshaws — Plural form of autorickshaw.
- balsamiferous — yielding or producing balsam
- banking hours — the hours during which a bank is open for business
- barosinusitis — aerosinusitis.
- barrier-nurse — to tend (infectious patients) in isolation, to prevent the spread of infection
- battlecruiser — A large warship of a type built in the early 20th century, carrying similar armament to a battleship but faster and more lightly armored.
- beaux esprits — bel esprit
- beaux-esprits — plural of bel-esprit.
- bibliolatrous — characterized by bibliolatry
- biculturalism — the characteristics, or policy, of a two-cultured society
- bildungsroman — a novel concerned with a person's formative years and development
- binary pulsar — a pulsar in a binary system.
- birthday suit — If you are in your birthday suit, you are not wearing any clothes.
- biscuit bread — biscuits or a biscuit: I like biscuit bread more than corn bread for supper.
- black russian — a drink made from one part coffee liqueur and two parts vodka, served over ice.
- boardinghouse — a private house in which accommodation and meals are provided for paying guests
- boraginaceous — of, relating to, or belonging to the Boraginaceae, a family of temperate and tropical typically hairy-leaved flowering plants that includes forget-me-not, lungwort, borage, comfrey, and heliotrope
- bosman ruling — an EU ruling that allows out-of-contract footballers to leave their clubs without the clubs receiving a transfer fee
- boutros-ghali — ˈBoutros (ˈbutroʊs ) ; bo̅oˈtrōs) 1922- ; Egypt. diplomat: secretary-general of the United Nations (1992-96)
- brachiosaurus — a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known
- braggadocious — boastful
- brain surgeon — a surgeon who specializes in brain surgery
- brain surgery — operation on the brain
- brain truster — a member of a brain trust; an important but usually unofficial adviser.
- brass rubbing — A brass rubbing is a picture made by placing a piece of paper over a brass plate that has writing or a picture on it, and rubbing it with a wax crayon.
- brass-rubbing — an antiquarian's technique for copying designs from incised brass memorial slabs and the like.
- brassfounding — the practice of making things from brass
- brassicaceous — belonging to the plant family Brassicaceae, an alternative name for the plant family Cruciferae.
- buccaneerings — the characteristic actions of a buccaneer
- bureaucratism — an official of a bureaucracy.
- bureaucratist — a believer in bureaucracy
- burglariously — in the manner of a burglar or buglary
- buridan's ass — an example intended to show the deficiency of reason. An ass standing equidistant from two identical heaps of oats starves to death because reason provides no grounds for choosing to eat one rather than the other
- burning glass — a convex lens for concentrating the sun's rays into a small area to produce heat or fire