Synonyms of 'difficult'

abstruse, adverse, antagonistic, arduous, awkward, brutal, burdensome, cantankerous, complex, complicated, contrary, counter, crabbed, cramp, critical, cross-grained, dark, delicate, demanding, detrimental, difficile, effortful, enigmatical, exacting, fastidious, finical, finicking, finicky, formidable, froward, fussy, grim, hairy, hard, harmful, herculean, hostile, inimical, intractable, intricate, irascible, jumbled, knotted, knotty, labored, laborious, mean, miserable, naughty, obscure, obstinate, obstructive, onerous, operose, opposite, ornery, particular, pawky, pernickety, perplexed, persnickety, perverse, problem, problematic, profound, queasy, recalcitrant, recondite, refractory, rigorous, rough, rugged, scabrous, sensitive, severe, sinister, spiny, squeamish, steep, strenuous, stressful, stubborn, stuffy, sulky, sullen, thorny, ticklish, toilsome, tough, tricky, troubled, troublesome, troublous, trying, uncompromising, unfavorable, unmanageable, untoward, unyielding, uphill, wayward, wicked, wretched