We steal as in a castle, cocksure: . . . we walk invisible. Shak. [ 1913 Webster ]
2. Quite certain. [ Colloq. ] [ 1913 Webster ]
I thought myself cocksure of the horse which he readily promised me. Pope. [ 1913 Webster ]
3. overconfident; -- of people; as, the team was so cocksure of winning that they didn't practice in the week before the big game.. [ Colloq. ] [ 1913 Webster ]