78 entries under hard topic. ×

6
distressing(adjective, severe, rough, difficult)
6
knotty(adjective, tough, severe, rough)
6
rigorous(adjective, severe, rough, difficult)
6
rough(adjective, great, tough, severe)
6
serious(adjective, tough, severe, rough)
6
time-consuming(adjective, tough, difficult, slow)
6
tiresome(adjective, severe, difficult, heavy)
6
wearing(adjective, dull, tough, difficult)
5
complicated(adjective, tough, severe, rough)
5
grueling(adjective, tough, difficult, heavy)
4
inconvenient(adjective, severe, offensive, distressing)
3
fussy(adjective, tough, difficult, harsh)
3
labored(adjective, great, tough, rough)
2
challenging(adjective, great, tough, severe)
2
disturbing(adjective, severe, difficult, offensive)
2
impeding(severe, offensive, distressing, upsetting)
2
troubling(severe, offensive, distressing, upsetting)
2
upsetting(adjective, severe, offensive, awful)
2
worrisome(adjective, severe, difficult, offensive)
2
worrying(adjective, severe, difficult, offensive)
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APASmart Define. (2015). onerous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/onerous/thesaurus/synonyms
ChicagoSmart Define. 2015. "onerous thesaurus" https://smartdefine.org/onerous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, onerous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/onerous/thesaurus/synonyms>.
MLASmart Define. "onerous thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/onerous/thesaurus/synonyms>