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(Entry 1 of 2)
wacko
Definition of wacko (Entry 2 of 2)
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Synonyms: Adjective
balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, insane, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge), moonstruck, non compos mentis, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, unsound, wacky (also whacky), wud [chiefly Scottish]
Synonyms: Noun
bug, crackbrain, crazy, fool, fruitcake, head case, loon, loony, lunatic, maniac, nut, nutcase, nutter [British slang], psycho, psychopath, sickie, sicko
Antonyms: Adjective
balanced, compos mentis, sane, sound, uncrazy
Noun
Recent Examples on the Web: Adjective
Recent Examples on the Web: Noun
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'wacko.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Adjective
1965, in the meaning defined above
1936, in the meaning defined above
by alteration
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