76 entries under severe topic. ×

17
strenuous(adjective, hard, great, tough)
12
wearisome(adjective, hard, tough, difficult)
11
heavy(adjective, tough, difficult, harsh)
11
troublesome(adjective, hard, tough, difficulty)
10
demanding(adjective, hard, tough, difficult)
10
formidable(adjective, tough, difficulty, difficult)
10
grueling(adjective, hard, tough, difficult)
9
tiring(adjective, hard, tough, rough)
7
effortful(adjective, hard, great, tough)
6
fatiguing(adjective, hard, tough, rough)
6
tiresome(adjective, hard, tough, heavy)
5
stiff(adjective, tough, difficult, painful)
4
exacting(adjective, tough, difficult, harsh)
4
not easy(expression, idiom, tough, difficulty)
4
rigorous(adjective, hard, tough, rough)
3
Herculean(adjective, tough, difficult, awkward)
3
bothersome(adjective, tough, difficult, awkward)
3
threatening(hard, tough, difficult, offensive)
2
challenging(adjective, great, tough, difficult)
2
difficile(adjective, tough, rough, difficult)
11 years ago|13k views|share |citing 
APASmart Define. (2015). toilsome thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/toilsome/thesaurus/synonyms
ChicagoSmart Define. 2015. "toilsome thesaurus" https://smartdefine.org/toilsome/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, toilsome thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/toilsome/thesaurus/synonyms>.
MLASmart Define. "toilsome thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/toilsome/thesaurus/synonyms>