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Definition of all out adverb from the Oxford Advanced Learner's Dictionary

all out

adverb
 
/ˌɔːl ˈaʊt/
 
/ˌɔːl ˈaʊt/
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  1. in a very determined way using every possible effort
    • We're going all out to win.
previously
adverb
 
 
From the Word list
Oxford 3000
B1
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