smooth

1 having or showing very polished and worldly manners a smooth salesman of expensive jewelry Synonyms debonair, suave, 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

2 involving minimal difficulty or effort it should be smooth going from this point on Synonyms cheap, downhill, effortless, facile, fluent, fluid, hands-down, light, painless, ready, royal, simple, easy, snap, softRelated Words idiotproof, mindless, quick, straightforward, unchallenging, uncomplicated; apparent, clear, clear-cut, distinct, evident, manifest, obvious, open-and-shut, palpable, patent, perspicuous, plain, transparent, unambiguous, unequivocal, unmistakableNear Antonyms burdensome, exhausting, onerous, oppressive, painful, stressful, taxing, troublesome; abstruse, complex, complicated, intricate, involved, knotty, problematic (also problematical), reconditeAntonyms arduous, demanding, difficult, exacting, formidable, grueling (or gruelling), hard, herculean, killer, labored, laborious, murderous, rough, severe, stiff, strenuous, toilful, toilsome, tough

3 having a surface without bends, breaks, or irregularities a smooth skating rink Synonyms even, flat, flush, plane, levelRelated Words exact, uniform; aligned (also alined), regular, true; horizontal, tabular; plumb, straight, verticalNear Antonyms inexact, irregular, unaligned, warped; undulating, undulatory, wavy; pitted, pockmarked, pockyAntonyms bumpy, coarse, lumpy, rough, uneven, unsmoothed

4 free from emotional or mental agitation his smooth disposition and leadership qualities lend themselves well to the position Synonyms collected, composed, cool, coolheaded, equal, level, limpid, peaceful, placid, possessed, recollected, sedate, self-composed, self-possessed, serene, calm, together, tranquil, undisturbed, unperturbed, unruffled, unshaken, untroubled, unworriedRelated Words even, even-keeled, steady, well-adjusted, well-balanced; imperturbable, nerveless, unflappable, unshakable; centered, disciplined, equable, self-contained, self-controlled; affable, breezy, devil-may-care, easygoing, happy-go-lucky, laid-back, loosey-goosey, mellow; carefree, nonchalant, unconcerned; assured, confident, self-assured; aloof, detached, dispassionate, indifferent; bovine, impassive, phlegmatic, sober, stolid; relaxed, relieved, tranquilized (also tranquillized)Near Antonyms anxious, bothered, distressed, uneasy, unquiet, unsettled, worried; jittery, jumpy, nervous, restless, skittish, tense; high-strung, unstable, uptightAntonyms agitated, discomposed, disturbed, flustered, perturbed, unglued, unhinged, unstrung, upset