12-letter words containing a, t, i, s, u
- automobilist — Driver; person who uses a motor vehicle such as car, van or truck.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autotheistic — Self-worshiping; prideful in the extreme.
- avascularity — the condition of having few blood vessels or of being without blood vessels
- aviculturist — A person who keeps and rears (breeds) birds.
- backsolution — The process or result of backsolving.
- ballet suite — music written for a ballet but suitable or arranged for performance in an orchestral concert.
- bankruptcies — Plural form of bankruptcy.
- barbiturates — any of a group of barbituric acid derivatives, used in medicine as sedatives and hypnotics.
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- basque shirt — a knitted pullover shirt having a crew neck, long or short sleeves, and a pattern of horizontal stripes.
- bathing suit — A bathing suit is a piece of clothing which people wear when they go swimming.
- bathophilous — (of an organism) living in very deep water
- beautifulest — (dated) Most beautiful; more beautiful than anyone or anything else.
- beauty strip — a narrow forest corridor left uncut alongside a road or body of water.
- bioacoustics — the study of animals' use of sound
- biscuit ware — unglazed earthenware
- blastulation — the process of blastula formation
- blue catfish — a large freshwater catfish, Ictalurus furcatus, that is a popular food fish in the states of the Mississippi River valley.
- blues guitar — blues guitar music
- brains trust — a group of knowledgeable people who discuss topics in public or on radio or television
- bridal suite — a room or set of rooms in a hotel for newly married couples
- brushability — the quality of being brushable
- bull mastiff — a large powerful breed of dog with a short usually fawn or brindle coat, developed by crossing the bulldog with the mastiff
- bunco artist — a confidence trickster or con artist
- burnt sienna — a reddish-brown dye or pigment obtained by roasting raw sienna in a furnace
- 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.
- bushy-tailed — bright-eyed and bushy-tailed, fresh, alert, eager, and lively
- calamitously — In a calamitous manner.
- calculations — Plural form of calculation.
- calixtus iii — (Alfonso de Borja; Alfonso Borgia) 1378–1458, Spanish ecclesiastic: pope 1455–58.
- callistus ii — died 1124, French ecclesiastic: pope 1119–24.
- calumniators — Plural form of calumniator.
- canterburies — Plural form of canterbury.
- capitularies — Plural form of capitulary.
- captiousness — The state of being captious.
- car industry — the industry concerned with the manufacture and selling of automobiles
- caricaturist — A caricaturist is a person who shows other people in an exaggerated way in order to be humorous or critical, especially in drawings or cartoons.
- cat squirrel — the gray squirrel, as distinguished from the fox squirrel.
- catacoustics — the branch of acoustics dealing with echoes and reflected sounds
- cater-cousin — a close friend
- causationism — the theory of universal causation
- causationist — a person who believes in the theory of universal causation
- caustic lime — lime1 (def 1).
- caustic soda — Caustic soda is a powerful chemical substance used to make strong soaps and clean drains.
- cautiousness — showing, using, or characterized by caution: a cautious man; To be cautious is often to show wisdom.
- chaetiferous — having bristles
- charcuteries — Plural form of charcuterie.
- chartularies — Plural form of chartulary.