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Meaning of cocksure

cock•sure

Pronunciation: (kok'shoor', -shûr'), [key]
— adj.
  1. 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.
  2. too certain; overconfident: He was so cocksure he would win the election that he didn't even bother to campaign.
  3. perfectly secure or safe.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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