English

Definition of dead beat adjective from the Oxford Advanced Learner's Dictionary

 

dead beat

 adjective
adjective
BrE BrE//ˌded ˈbiːt//
 
; NAmE NAmE//ˌded ˈbiːt//
 
(also beat) [not before noun] (informal) Tiredness
 
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very tired You look dead beat. See related entries: Tiredness