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whack [whacks]▼(A blow, impact or slap)noun[UK: wæk] [US: ˈwæk]
all of a sudden▼(colloquial: suddenly, see also: suddenly)adverb[UK: ɔːl əv ə ˈsʌd.n̩] [US: ɔːl əv ə ˈsʌd.n̩]
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