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1. Completely sure; certain.
2. Too sure; overconfident.

cock′sure′ly adv.
cock′sure′ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌkɒkˈʃʊə; -ˈʃɔː)
overconfident; arrogant
[C16: of uncertain origin]
ˌcockˈsurely adv
ˌcockˈsureness n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkɒkˈʃʊər, -ˈʃɜr)

1. absolutely sure; certain.
2. overconfident; cocky.
cock′sure′ly, adv.
cock′sure′ness, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.cocksure - marked by excessive confidence; "an arrogant and cocksure materialist"; "so overconfident and impudent as to speak to the queen"; "the less he knows the more positive he gets"
confident - having or marked by confidence or assurance; "a confident speaker"; "a confident reply"; "his manner is more confident these days"; "confident of fulfillment"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


adjective overconfident, arrogant, brash, cocky, presumptuous, bumptious, hubristic, full of yourself a cocksure, self-confident performer
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
واثِقٌ بِنَفْسِهِ أكْثر مما يَنْبَغي
příliš jistýsebejistý
handviss; of viss
yüzde yüz emin olma


[ˈkɒkˈʃʊəʳ] ADJcreído, engreído
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˌkɒkˈʃʊər ˌkɒkˈʃɔː] adj (= cocky) → outrecuidant(e)
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


[ˌkɒkˈʃʊəʳ] adjtroppo sicuro/a di sé, baldanzoso/a
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(kok) noun
1. the male of birds, especially of the domestic fowl. a cock and three hens; (also adjective) a cock sparrow.
2. a kind of tap for controlling the flow of liquid, gas etc.
3. a slang word for the penis.
1. to cause to stand upright or to lift. The dog cocked its ears.
2. to draw back the hammer of (a gun).
3. to tilt up or sideways (especially a hat).
cockerel (ˈkokərəl) noun
a young farmyard cock.
ˈcocky adjective
conceited; over-confident. a cocky attitude.
cock-and-bull story
an absurd, unbelievable story.
ˈcock-crow noun
early morning. He gets up at cock-crow.
ˈcock-eyed adjective
ridiculous. a cock-eyed idea.
ˌcockˈsure adjective
very or too confident. He was cocksure about passing the exam.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
For in a desire to win quickly and to win much I can see nothing sordid; I have always applauded the opinion of a certain dead and gone, but cocksure, moralist who replied to the excuse that " one may always gamble moderately ", by saying that to do so makes things worse, since, in that case, the profits too will always be moderate.
And Sophia Antonovna's cocksure and contemptuous "some police-hound" was characteristically Russian in another way.
What an immense joke if Verloc had simply made fools of the whole of Europe, of the revolutionary world, of the police, of the press, and of the cocksure Professor as well.
Does it not strike you as a little singular that this McCarthy, who appears to have had little of his own, and to have been under such obligations to Turner, should still talk of marrying his son to Turner's daughter, who is, presumably, heiress to the estate, and that in such a very cocksure manner, as if it were merely a case of a proposal and all else would follow?
Tarantino added, "McQueen on 'Wanted Dead or Alive' played a slim, cocksure bounty hunter named Josh, and on 'Bounty Law' Rick Dalton played a slim, cocksure bounty hunter named Jake."
The cocksure Floridian superstar, whose caddie is a member of Portrush, is no bigger than 8-1.
Ambitious, cocksure LAPD officer Erin (Nicole Kidman) goes undercover with handsome FBI agent Chris (Sebastian Stan) to infiltrate a gang of robbers.
6/10 DESTROYER (15) AMBITIOUS, cocksure LAPD officer Erin bell (Nicole Kidman) goes undercover with handsome Fbi agent Chris (sebastian stan) to infiltrate a gang of robbers.
Days ago, presidential spokesperson Salvador Panelo was cocksure the 'matrix' containing the personalities supposedly complicit in the ouster plot against his boss was authentic, having come from no less than the President himself who supposedly has access to all intelligence reports he needs to confirm that such a plan was afoot.
Forty years after Steve Dahl burst onto Chicago radio as a 23-year-old cocksure kid hosting a morning show called "Steve Dahl's Rude Awakening," he's bowing out as an elder statesman with humility and gratitude, Robert Feder writes.
YOUR SHOUT 6 Fiona, when you're 19 you're clever and cocksure. When you're 21 you pick the wrong partner without realising it.
When Colonel McCullough (Woody Harrelson) and his soldiers attack the ape stronghold, it sparks a battle for suvival between humans and apes Cars 3, U, PS17.99 LIGHTNING McQueen (voiced by Owen Wilson) has his thunder stolen by cocksure rookie Jackson Storm (Armie Hammer).