There are 2 main definitions of whacko in English:

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whacko 1

Pronunciation: /wakˈəʊ/

exclamation

British informal, dated
Used to express delight and enthusiasm: Home on Friday. Whacko!
More example sentences
  • Of course I'm not ending it here, ya whacko!
  • As for the suicidal farmer, the guy was a whacko!
  • The rest of them ranged from disquieting to downright whacko!

Words that rhyme with whacko

aglow, ago, alow, although, apropos, art nouveau, Bamako, Bardot, beau, Beaujolais Nouveau, below, bestow, blow, bo, Boileau, bons mots, Bordeaux, Bow, bravo, bro, cachepot, cheerio, Coe, crow, Defoe, de trop, doe, doh, dos-à-dos, do-si-do, dough, dzo, Flo, floe, flow, foe, foreknow, foreshow, forgo, Foucault, froe, glow, go, good-oh, go-slow, grow, gung-ho, Heathrow, heave-ho, heigh-ho, hello, ho, hoe, ho-ho, jo, Joe, kayo, know, lo, low, maillot, malapropos, Marceau, mho, Miró, mo, Mohs, Monroe, mot, mow, Munro, no, Noh, no-show, oh, oho, outgo, outgrow, owe, Perrault, pho, po, Poe, pro, quid pro quo, reshow, righto, roe, Rouault, row, Rowe, sew, shew, show, sloe, slow, snow, so, soh, sow, status quo, stow, Stowe, strow, tally-ho, though, throw, tic-tac-toe, to-and-fro, toe, touch-and-go, tow, trow, undergo, undersow, voe, whoa, wo, woe, Xuzhou, yo, yo-ho-ho, Zhengzhou, Zhou
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There are 2 main definitions of whacko in English:

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whacko 2

adjective& noun (plural whackos)

Variant spelling of wacko.
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