cocksure

[ kok-shoor, -shur ]
/ ˈkɒkˈʃʊər, -ˈʃɜr /

adjective

perfectly sure or certain; completely confident in one's own mind: She was cocksure that she was able to do the job better than anyone else.
too certain; overconfident: He was so cocksure he would win the election that he didn't even bother to campaign.
Obsolete. perfectly secure or safe.

Words related to cocksure

Origin of cocksure

First recorded in 1510–20; cock1 + sure

OTHER WORDS FROM cocksure

cock·sure·ly, adverbcock·sure·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cocksure

British Dictionary definitions for cocksure

cocksure
/ (ˌkɒkˈʃʊə, -ˈʃɔː) /

adjective

overconfident; arrogant

Derived forms of cocksure

cocksurely, adverbcocksureness, noun

Word Origin for cocksure

C16: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012