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

 

nebbish

 noun
noun
BrE BrE//ˈnebɪʃ//
 
; NAmE NAmE//ˈnebɪʃ//
 
(North American English, informal)
 
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a man who behaves in an anxious and nervous way and without confidence Word Origin late 19th cent.: from Yiddish nebekh ‘poor thing’.
See the Oxford Advanced American Dictionary entry: nebbish