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English definition of “whack”

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whack

verb uk   /wæk/ us  
[T] to hit someone or something noisily: He whacked the tree trunk with his stick. She whacked him in the mouth. [T + adv/prep] informal to quickly put something somewhere: "Where shall I put my bag?" "Just whack it in the corner there."

whack

noun uk   /wæk/ us  

whack noun (SHARE)

[S or U] informal a share or part: Low earners will pay only half the charge but high earners will have to pay full whack (= pay the whole amount). That's not a fair whack.top whack UK informal the highest possible price or payment: They're prepared to pay top whack for goods like this.

whack noun (NOT RIGHT)

out of whack US informal not operating correctly or looking right: You can use Carol's old bike - the gears are out of whack, but it still goes.

whack noun (HIT)

[C] the action of hitting someone or something noisily: He gave the ball a whack with his stick.
(Definition of whack from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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