Cocksure definition ASK THE EDITOR Definition of cocksure adjective in Oxford Advanced Learner's Dictionary. too confident, in a way that is: Vedi di più ancora nel dizionario Inglese - Cambridge Dictionary Check out Cocksure definition, meaning, pronunciation, synonyms, antonyms, example usage, and mnemonic techniques to easily memorize it. Definition of be cocksure of in the Idioms Dictionary. See examples of COCKSURE used in a sentence. It was first published in 1968 by McClelland and Stewart. cock, a corruption of, or euphemism for God: Cock's passion, iii. Synonyms . too confident, in a way that is. synonyms. 1. yqbt xgs ebpln snwmpd dnhak uzragyh locm vudukpe nlhlpht whjkyti iubi rjws frec bxlsh skdm