debonair

1 having or showing freedom from worries or troubles his debonair dismissal of my inquiry concerning his financial situation led me to believe that nothing was wrong Synonyms blithe, carefree, devil-may-care, gay, happy-go-lucky, insouciant, lighthearted, lightsome, slaphappy, unconcernedRelated Words blasé (also blase), breezy, cavalier, nonchalant; casual, easygoing, informal, laid-back, low-pressure, relaxed, unfussyNear Antonyms earnest, grave, serious, serious-minded, somber (or sombre); careful, cautious, heedful, wary; anxious, concerned, upset, worried; long-suffering, overburdened, sorrowfulAntonyms careworn

2 having or showing very polished and worldly manners the debonair gentleman charmed all of the ladies in the room Synonyms suave, smooth, sophisticated, svelte, urbaneRelated Words cavalier, glib, slick, unctuous; civilized, couth, cultivated, cultured, genteel, graceful, gracious, poised, polished, refined, well-bred; cosmopolitan, metro, metropolitan, smart, worldly-wise; experienced, knowing, practiced (also practised), schooled, seasoned; amiable, appealing, attractive; assured, calm, collected, composed, confident, cool, placid, secure, self-assured, self-confident, self-possessed, serene, tranquil, undisturbed, unperturbedNear Antonyms awkward, clumsy, gauche, graceless, stiff, stilted, uncomfortable, uneasy, ungraceful, wooden; callow, green, inexperienced, puerile, raw; hick, parochial, provincial, rough-hewn, rustic (also rustical); inelegant, philistine, uncivilized, uncultured, unrefined; unsophisticated, unworldly; gawky, lubberly, stodgy, ungainly; diffident, insecureAntonyms boorish, churlish, classless, clownish, loutish, uncouth