WHACKIER
WHACKY
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
(adjective) informal or slang terms for mentally irregular; “it used to drive my husband balmy”
goofy, silly, wacky, whacky, zany
(adjective) ludicrous, foolish; “wore a goofy hat”; “a silly idea”; “some wacky plan for selling more books”
Source: WordNet® 3.1
Adjective
whackier
comparative form of whacky
Source: Wiktionary