156 entries under adjective topic. ×

4
leaden
4
ticklish
4
tricky(difficult, awkward, demanding, irritating)
3
agonizing
3
annoying(dull, boring, tedious, distressing)
3
cantankerous
3
finicky(tough, difficult, harsh, rigid)
3
fussy(hard, tough, difficult, harsh)
3
irritating(dull, tough, severe, boring)
3
labored(hard, great, tough, rough)
3
thorny
3
tight
2
Herculean(tough, severe, difficult, awkward)
2
adverse
2
awkward(difficult, heavy, demanding, weighty)
2
challenging(hard, great, tough, severe)
2
contrary
2
disturbing(hard, severe, difficult, offensive)
2
grave
2
harrowing
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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>