Definition of tiredness noun from the Oxford Advanced Learner's Dictionary

 

tiredness

 noun
noun
BrE BrE//ˈtaɪədnəs//
 
; NAmE NAmE//ˈtaɪərdnəs//
 
[uncountable] Tiredness
 
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the feeling that you would like to sleep or rest synonym weariness (1) She pleaded tiredness and went to bed early. See related entries: Tiredness