[syn: 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]
WordNet (r) 3.0 (2006):
whacky
adj 1: ludicrous, foolish; "gave me a cockamamie reason for not
going"; "wore a goofy hat"; "a silly idea"; "some wacky
plan for selling more books" [syn: cockamamie,
cockamamy, goofy, sappy, silly, wacky,
whacky, zany]
2: 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,
loony, loopy, nuts, nutty, round the bend, around
the bend, wacky, whacky]