'BUCK UP' Phrasal Verb

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Definition of Buck up phrasal verb

Buck up

1. Hurry (either transitive or reflexive)
   (Separable [optional] | International English | Contributed By: BobK)
   
   » Example: 'BUCK UP - the taxi's waiting.'
2. Smarten up, improve
   (Separable [optional] | International English | Contributed By: BobK)
   
   » Example: You had better BUCK your ideas UP, or you'll fail the course.