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cocksure

adjective
 
 
/ˌkɒkˈʃɔːr/ US  /ˌkɑːkˈʃɝː/ informal disapproving

Definition

too confident, in a way that is slightly unpleasant or rude: a cocksure young manRude and cheekyRelating to sex and sexual desireShowing arrogance and conceitConfidence and self-assuranceBoasting
(Definition of cocksure adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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