adj. 25B6; adjective ONEROUS, oppressive, troublesome, weighty, worrisome, stressful; vexatious, irksome, trying, difficult; arduous, strenuous, hard, laborious, exhausting, tiring, taxing, demanding, punishing, gruelling.
BURDENSOME
Meaning of BURDENSOME in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012