Synonyms of burdensome

1 Syllable
tough, trying
2 Syllables
wearing, heavy, troublous, clunker, wearying, upstream, taxing, hard-won, two-ton, carking, heaviest, arduous, weightier, weighty, heavier, dragger, plaguy, crushing
3 Syllables
laborious, demanding, rigorous, disturbing, perturbing, toilsome, unwieldy, difficult, irksome, galumphing, onerous, ponderous, exacting, unsettling, upsetting, vexatious, exigent, heavyweight
4 Syllables
infestive, oppressive, boresome, worrisome, difficile, troublesome, cumbersome, tiresome, overtaxing, nettlesome, depressive
5 Syllables
enervative, superincumbent