4
inconvenient(adjective, hard, severe, offensive, distressing)
4
leaden
4
sore
4
ticklish(adjective, difficult)
4
tricky(adjective, difficult, awkward, demanding, irritating)
3
agonizing
3
annoying(adjective, dull, boring, tedious, distressing)
3
cantankerous(adjective, difficult)
3
finicky(adjective, tough, difficult, harsh, rigid)
3
fussy(adjective, hard, tough, difficult, harsh)
3
irritating(adjective, dull, tough, severe, boring)
3
labored(adjective, hard, great, tough, rough)
3
punishing
3
rigourous
3
thorny(adjective, difficult)
3
tight(adjective, difficult)
2
Herculean(adjective, tough, severe, difficult, awkward)
2
adverse(adjective, difficult)
2
awkward(adjective, difficult, heavy, demanding, weighty)
2
calamitous
11 years ago|15k views|share |citing 
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>