Definition of gangbusters noun from the Oxford Advanced American Dictionary

 

gangbusters

 noun
noun
NAmE//ˈɡæŋˌbʌstərz//
 
 
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Idioms
like gangbusters(informal)
 
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with a lot of energy and enthusiasm We went like gangbusters to get the project done on time.
See the Oxford Advanced Learner's Dictionary entry: gangbusters