loony
adj : informal or slang terms for mentally irregular; "it used to
drive my husband balmy" [syn: 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]
n : someone deranged and possibly dangerous [syn: crazy, looney,
weirdo]
[also: looniest, loonier]