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English definition of “goof around”

goof around

US informal phrasal verb with goof     /ɡuːf/ verb [I or T] mainly US informal
to spend time doing nothing important or behaving in a silly way: The boys spent the whole summer just goofing around.Behaving in a silly way
(Definition of goof around from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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