Confident Synonyms

Self-assured, sure of oneself, positive, self-assertive, believing in oneself, poised, cool, calm, and collected, level-headed, nonchalant, imperturbable, impassive, tranquil, at ease, together, laid-back, equanimous, assured, self-confident, assertive, self-possessed, self-reliant, filled with aplomb, cool-headed, collected, phlegmatic, composed, unperturbed, unruffled, serene, relaxed, unflappable, unfazed, and nonplussed.

Optimistic, sanguine, certain, convinced, unshakeable in one's belief, easy in one's mind, assured, have no doubt, hold the unwavering view, hopeful, sure, positive, in no doubt, secure in one's belief, satisfied, persuaded, and not question.