Antonyms for clumsy

not agile; awkward:

clever, couth, coordinated, athletic, agile, expert, graceful, adroit, dexterous.

noun:

faultless, poised, demonstration, self-possessed, confident, felicitous, flawless, perfect, serene, absurdity, collected, placid, professional, perfected, able, meticulous, functional, paradox, refined, competent, capable, gracious, self-confident, contradiction, diplomatic, sophism, exact, sure-handed, assured, finished, composed, nonsense, practical, precise, easy, serviceable, secure, urbane, unperturbed, practicable, neat, tactful, coordinated, useful, facile, tranquil, calm, wieldy, undisturbed, cool, effortless, self-assured, well-done.

n.:

manageable.