wacky
adjective
1. ludicrous, foolish
- some wacky plan for selling more books
Similar word(s): foolish, goofy, silly, whacky, zany
2. informal or slang terms for mentally irregular
Similar word(s): insane, balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kookie, kooky, loony, loopy, nuts, nutty, whacky