Synonyms of self-confident

2 Syllables
certain, jaunty, hotshot, prankish, fearless, jauntier, poised, cockier, hotdog, cocky
3 Syllables
questionless, sanguine, assured, self-reliant, know-it-all, undoubtful
4 Syllables
assertive, gamesome, self-assured, self-sufficient, self-dependent, self-sufficing, self-supported, self-sustained