- loony
- I(New American Roget's College Thesaurus)adj., informal, crazy, wacky (see insanity).- loony binII(Roget's 3 Superthesaurus) a.Sl. crazy, nutty, demented, lunatic, *daffy, *cuckoo, *wacky, mad, daft, foolish, stupid, *out of one's gourd, irrational.ANT.: sane, rational, soberIII(Roget's Thesaurus II) I (or looney) also luny adjective 1. Informal. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. Informal: cockeyed, crazy, loopy. Slang: balmy2, dippy, dopey, jerky, sappy, wacky. See ABILITY, KNOWLEDGE. 2. Informal Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, crazy, daft, demented, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong. Informal: bonkers, cracked, daffy, gaga. Slang: bananas, batty, buggy, cuckoo, fruity, loco, nuts, nutty, screwy, wacky. Chiefly British: crackers. Law: non compos mentis. Idioms: around the bend, crazy as a loon, mad as a hatter, not all there, nutty as a fruitcake, off (or out of) one's head, off one's rocker, of unsound mind, out of one's mind, sick in the head, stark raving mad. See SANE. II (or looney) also luny noun Informal. A person regarded as strange, eccentric, or crazy: crackpot, crazy, eccentric, lunatic. Informal: crank, loon. Slang: cuckoo, ding-a-ling, dingbat, kook, nut, screwball, weirdie, weirdo. See WISE.
English dictionary for students. 2013.