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

 

twit

 noun
noun
BrE BrE//twɪt//
 
; NAmE NAmE//twɪt//
 
(informal, especially British English)
 
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a silly or annoying person You look a twit in that suit. Ray’s a bit of a twit. upper-class twits Word Origin 1930s (earlier dialect, in the sense ‘malicious gossip’): perhaps from twit in the sense ‘tease someone in a good-humoured way’.
See the Oxford Advanced American Dictionary entry: twit