[adj] informal or slang terms for mentally irregular; "it used to drive my husband balmy"
Synonyms
around the bend, balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, insane, kookie, kooky, loco, loony, loopy, nuts, nutty, wacky, whacky