English

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

 

insomniac

 noun
noun
BrE BrE//ɪnˈsɒmniæk//
 
; NAmE NAmE//ɪnˈsɑːmniæk//
 
 
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a person who finds it difficult to sleep
See the Oxford Advanced American Dictionary entry: insomniac