Open English Wordnet
Adjectives
(s)goofy, silly, wacky, whacky, zanyludicrous, foolish“wore a goofy hat”,
“a silly idea”,
“some wacky plan for selling more books” (s)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, whackyinformal or slang terms for mentally irregular“it used to drive my husband balmy”