Cocksure
Pronunciation : Cock"sure`
Part of Speech : a.
Definition : 1. Perfectly safe. [Obs.] We steal as in a castle, cocksure: . . . we walk invisible. Shak.
2. Quite certain. [Colloq.] I throught myself cocksure of the horse which he readily promised me. Pope.
Source : Webster's Unabridged Dictionary, 1913