| Adj. | 1. | kooky - informal or slang terms for mentally irregular; "it used to drive my husband balmy"Synonyms: bats, batty, bonkers, buggy, crackers, daft, dotty, haywire, kookie, loco, loony, loopy, nuts, around the bend, balmy, round the bend, wacky, whacky, barmy, nutty, fruity, cracked |