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knuckle up. In DICTIOUS you will not only get to know all the dictionary meanings for the word
knuckle up, but we will also tell you about its etymology, its characteristics and you will know how to say
knuckle up in singular and plural. Everything you need to know about the word
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English
Verb
knuckle up (third-person singular simple present knuckles up, present participle knuckling up, simple past and past participle knuckled up)
- (informal, chiefly African-American Vernacular) To clench one's fist(s) as though in preparation for a fight.
2012, Vanessa Miller, Latter Rain:With a resolve to get his son away from these monsters, Isaac knuckled up and mean-mugged his opponent.
2012, Pink Maxwell, A Scorpion's Sting, page 209:Tony stumbled a little and when he found his balance, he knuckled up and sent a jab toward Will's neck.
- (informal, by extension) To approach a problem aggressively.
- (slang) To strike or fight.