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Variant of wacky.
adj, whackier or whackiest
slang US a variant spelling of wacky
adj. wack•i•er, wack•i•est. Slang.
odd or irrational; crazy.
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|Adj.||1.||whacky - ludicrous, foolish; "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books"|
colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
foolish - devoid of good sense or judgment; "foolish remarks"; "a foolish decision"
|2.||whacky - informal or slang terms for mentally irregular; "it used to drive my husband balmy"|
bats, batty, bonkers, buggy, crackers, daft, dotty, haywire, kookie, kooky, loco, loony, around the bend, balmy, nuts, round the bend, wacky, nutty, barmy, loopy, fruity, cracked
insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"
1. Slang. So senseless as to be laughable:
absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany.
2. Slang. Afflicted with or exhibiting irrationality and mental unsoundness:
brainsick, crazy, daft, demented, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong.
Chiefly British: crackers.
Law: non compos mentis.