45 entries under upsetting topic. ×

39
burdensome(adjective, dull, hard, tough, severe)
30
difficult(adjective, dull, hard, great, tough)
27
laborious(adjective, dull, hard, great, tough)
25
hard(adjective, dull, great, tough, severe)
16
severe(adjective, hard, tough, rough, difficult)
16
toilsome(adjective, hard, great, tough, difficulty)
16
troublesome(adjective, hard, tough, severe, difficulty)
11
irksome(adjective, dull, difficulty, difficult, heavy)
11
trying(adjective, dull, hard, tough, difficult)
9
wearisome(adjective, dull, tough, severe, difficult)
8
bothersome(adjective, hard, tough, severe, difficult)
6
distressing(adjective, hard, severe, rough, difficult)
4
inconvenient(adjective, hard, severe, offensive, distressing)
3
annoying(adjective, dull, boring, tedious, distressing)
3
irritating(adjective, dull, tough, severe, boring)
2
impeding(hard, severe, offensive, distressing)
2
troubling(hard, severe, offensive, distressing)
1
creepy(hard, severe, offensive, distressing)
1
depressing(adjective, hard, severe, offensive, cruel)
1
discouraging(adjective, hard, severe, offensive, cruel)
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APASmart Define. (2015). onerous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/onerous/thesaurus/synonyms
ChicagoSmart Define. 2015. "onerous thesaurus" https://smartdefine.org/onerous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, onerous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/onerous/thesaurus/synonyms>.
MLASmart Define. "onerous thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/onerous/thesaurus/synonyms>