cocksureadj.
英 kɒk'ʃɔː; kɒk'ʃʊə | 美 ,kɑk'ʃʊr
中文adj. 确信的；独断的；过分自信的
词根词源
cocksure (adj.)1520s, "certain," from cock (n.1) + sure (adj.). Probably "as assured as a cock." "The word was originally perfectly dignified, and habitually used in the most solemn connexions" [OED].
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