Synonyms and related words :
arrogant, assured, balanced, cocksure, collected, composed, confident, convinced, decided, determined, equanimous, equilibrious, hubristic, levelheaded, overconfident, oversure, overweening, persuaded, poised, pompous, positive, proud, reassured, recollected, sanguine, secure, self-confident, self-controlled, self-important, self-possessed, self-reliant, self-restrained, self-satisfied, smug, sure, together, unafraid, undoubtful, undoubting, unfaltering, unhesitating, unwavering, well-balanced