Synonyms of troublesome

1 Syllable

hard, rough, mean, tough, trying

2 Syllables

gasser, nagging, vexing, annoying, arduous, dismal, prickly, hi-tech, upstream, worrying, hard-won, tricky, plaguy, painful, pesky, smarting, wicked, uphill, heavy, troublous, pricklier, hard-time, toucher, grievous, briery, taxing, nebby, messy, murder, ugly, brambly, dickens

3 Syllables

demanding, disturbing, disquieting, mischievous, damaging, irksome, rascally, onerous, pestilent, unpleasant, unruly, kibitzing, mistimed, backbreaker, difficult, upsetting, vexatious, alarming, liverish, dangerous, unsettling, laborious, distressing, perturbing, ponderous, hardnosed, harassing, distressful

4 Syllables

ill-behaved, burdensome, bothersome, complicated, obstructive, problematic, tiresome, refractory, overtaxing, oppressive, difficile, irritating, intermeddling, depressive, afflictive, troublemaking, pestiferous, pestilential, embarrassing, intractable, infestive, repressive, unlikable, disruptive, meddlesome, wearisome, incommodious, inconvenient, nettlesome, echinated, discommodious

5 Syllables

importunate, inopportune, superincumbent, unfavorable, unamenable, uncomfortable, rebarbative, ungovernable, undesirable