cocksure cocksure {adj.} Overconfident; very sure. Paul was cocksure that it wasn 't going to snow, but it snowed so much that we had to dig our way out of the house. Categories: add yours {adj.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: C Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss