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

drowsiness

noun
 
/ˈdraʊzinəs/
 
/ˈdraʊzinəs/
[uncountable]
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  1. the state of being tired and wanting to sleep synonym sleepiness
    • The drugs tend to cause drowsiness.
previously
adverb
 
 
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