• WordNet 3.6
    • adj 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"
    • ***
Webster's Revised Unabridged Dictionary
    • Cocksure overconfident; -- of people; as, the team was so cocksure of winning that they didn't practice in the week before the big game..
    • Cocksure Perfectly safe. "We steal as in a castle, cocksure: . . . we walk invisible."
    • Cocksure Quite certain. "I thought myself cocksure of the horse which he readily promised me."
    • ***
Century Dictionary and Cyclopedia
    • cocksure Perfectly secure or safe.
    • cocksure Confidently or absolutely sure or certain.
    • cocksure With perfect security or certainty.
    • ***


  • Bertrand Russell
    “The trouble with the world is that the stupid are cocksure and the intelligent full of doubt.”
  • Lord Melbourne
    “I wish I was as cocksure of anything as Tom Macaulay is of everything.”


In literature:

Little cocksure LABBY, too!
"Punch, or the London Charivari, Volume 104, January 14, 1893" by Various
Of a cocksure, ambitious boy just breaking out of leading strings?
"The Brentons" by Anna Chapin Ray
What is your verdict, Mr. Cocksure Scientist?
"The Shadow World" by Hamlin Garland
He sounded so cocksure, so all-knowing.
"Tight Squeeze" by Dean Charles Ing
Too jolly cocksure for me.
"The Privet Hedge" by J. E. Buckrose
There was something too cocksure about the man.
"The Monster" by S. M. Tenneshaw
His absolute cocksureness was too ridiculous.
"Desert Conquest" by A. M. Chisholm
Cocksure he was, and before long she knew him boastful; but competence sat on him, none the less.
"Brand Blotters" by William MacLeod Raine
Gladstone was remarking but the other day, 'Harding was always so cocksure.
"Robert Orange" by John Oliver Hobbes
Young Japan, we are led to believe, is intensely ambitious and extremely cocksure.
"The Empire of the East" by H. B. Montgomery
She had known that he was cocksure and domineering.
"Counsel for the Defense" by Leroy Scott
He wouldn't be so cocksure of himself if he did.
"The Island Mystery" by George A. Birmingham
I liked to hear her knock my big men in her cocksure superior way.
"The Harbor" by Ernest Poole
But Garboy is too cocksure.
"Fire Mountain" by Norman Springer
I fear I grow too cocksure of my literary attainments out here, with none to check me.
"An Ocean Tramp" by William McFee
He is so self-satisfied, so arrogant, and so cocksure of every word he utters and every movement he makes.
"Aces Up" by Covington Clarke
Down the street he had met Judson with head erect walking with a cocksure step.
"The Price of the Prairie" by Margaret Hill McCarter
And what a cocksure air he had!
"Eyes Like the Sea" by Mór Jókai
But all the same I felt cocksure in my heart that it would never come to this.
"A Marriage at Sea" by W. Clark Russell
But cocksureness was tricky on such a night.
"Harper's Round Table, July 16, 1895" by Various

In news:

UES Apartment of Mutual Fund King Sells to Cocksure Todd Cohen and His Cosmo Girl.
The cocksure Broner says he wants to be the first boxer to make a billion dollars.

In science:

They therefore fail to convince the cocksure classical physicist—or an unprejudiced layman.
Non-classical correlations from dissociation time entanglement