- 1. crazy, loony, looney, nutcase, weirdo, lunatic, madman, maniac
- usage: someone deranged and possibly dangerous
WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky, insane (vs. sane)
- usage: informal or slang terms for mentally irregular; "it used to drive my husband balmy"
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See also: loony (Dictionary)