Synonyms of 'burdensome'

annoying, arduous, backbreaking, besetting, bothersome, crushing, cumbersome, cumbrous, demanding, effortful, exacting, exigent, forced, grievous, grueling, harsh, heavy, hefty, herculean, impedimental, impeditive, incumbent, irksome, killing, labored, laborious, lumpish, massive, onerous, operose, oppressive, overburdensome, painful, plaguey, strained, strenuous, superincumbent, toilsome, tough, troublesome, trying, tyrannous, unwieldy, uphill, vexatious, wearisome, weighty, worrisome