100 entries under hard topic. ×

18
sticky(adjective, difficult, complex, awkward)
17
strenuous(adjective, great, tough, severe)
17
uphill(adjective, great, tough, difficult)
12
wearisome(adjective, tough, severe, difficult)
11
troublesome(adjective, tough, severe, difficulty)
10
demanding(adjective, tough, severe, difficult)
10
grueling(adjective, tough, severe, difficult)
9
exhausting(adjective, rough, difficult, heavy)
9
tiring(adjective, tough, severe, rough)
7
effortful(adjective, great, tough, severe)
7
wearing(adjective, tough, rough, difficult)
6
fatiguing(adjective, tough, severe, rough)
6
labored(adjective, great, tough, difficult)
6
tiresome(adjective, tough, severe, heavy)
4
rigorous(adjective, tough, severe, rough)
3
threatening(tough, severe, difficult, offensive)
2
distressing(adjective, severe, rough, difficult)
2
hairy(adjective, tough, severe, rough)
2
irksome(adjective, severe, difficulty, rough)
2
mean(adjective, rough, difficult, heavy)
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APASmart Define. (2015). toilsome thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/toilsome/thesaurus/synonyms
ChicagoSmart Define. 2015. "toilsome thesaurus" https://smartdefine.org/toilsome/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, toilsome thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/toilsome/thesaurus/synonyms>.
MLASmart Define. "toilsome thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/toilsome/thesaurus/synonyms>