COCKSURE


Meaning of COCKSURE in English

cock ‧ sure /ˌkɒkˈʃʊə $ ˌkɑːkˈʃʊr/ BrE AmE adjective old-fashioned

[ Date: 1500-1600 ; Origin: cock word used to avoid saying 'God' (14-19 centuries) + sure ]

too confident of your abilities or knowledge, in a way that is annoying to other people:

He seemed rather too cocksure for my liking.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.