- [noun] someone deranged and possibly dangerous
Synonyms: crazy, looney, weirdo
- [adjective] informal or slang terms for mentally irregular; "it used to drive my husband balmy"
Synonyms: balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky
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