239 entries under severe topic. ×

3
unpleasant(adjective, mean, hard, cool)
3
worrying(adjective, difficult, heavy, important)
2
anesthetized(adjective, hard, cruel, unsympathetic)
2
astringent(adjective, strong, hard, harsh)
2
challenging(hard, great, difficult, painful)
2
comfortless(adjective, hard, sharp, nasty)
2
difficile(rough, difficult, painful, problematic)
2
immense(adjective, person, body, painful)
2
insensate(noun, adjective, hard, careless)
2
irritating(adjective, dull, boring, grim)
2
keen(adjective, clear, excellent, fine)
2
no-nonsense(adjective, sharp, firm, harsh)
2
outrageous(adjective, bad, offensive, awful)
2
rude(adjective, hard, sharp, nasty)
2
sharp(adjective, hard, smart, nasty)
2
titanic(painful, problematic, trying)
2
ugly(adjective, bad, offensive, dark)
2
zealous(adjective, clear, strong, smart)
1
cantankerous(adjective, hard, firm, difficult)
1
Draconian(adjective, firm, harsh, rigid)
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APASmart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>