facile

Synonyms

cheap, downhill, easy, effortless, fluent, fluid, hands-down, light, painless, ready, royal, simple, smooth, snap, soft;

Antonyms

arduous, demanding, difficult, exacting, formidable, grueling (or gruelling), hard, herculean, killer, labored, laborious, murderous, rough, severe, stiff, strenuous, toilful, toilsome, tough;

Near Antonyms

burdensome, exhausting, onerous, oppressive, painful, stressful, taxing, troublesome;

abstruse, complex, complicated, intricate, involved, knotty, problematic (also problematical), recondite;

Related 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, unmistakable;