239 entries under severe topic. ×

22
fierce(noun, adjective, clear, bad, hard)
22
sad(adjective, bad, hard, cool)
21
demanding(adjective, dull, hard, easy)
21
stony(adjective, mean, hard, cool)
21
callous(noun, adjective, mean, hard, cool)
21
stern(adjective, hard, easy, rough)
20
nasty(adjective, mean, bad, hard, cool)
20
obdurate(adjective, mean, strong, hard, cool)
19
disturbing(adjective, hard, difficult, awful)
19
grave(adjective, hard, difficult, harsh)
19
hardened(noun, adjective, characteristic, strong, hard)
19
powerful(adjective, person, body, strong, great)
18
resolute(adjective, calm, clear, strong, hard)
18
strenuous(adjective, action, dull, strong, great)
18
unbending(adjective, mean, clear, strong, hard)
17
courageous(adjective, clear, strong, lively)
17
onerous(adjective, dull, hard, great)
17
unfeeling(noun, adjective, calm, mean, hard)
17
unsympathetic(adjective, mean, hard, cool)
15
troublesome(adjective, characteristic, difficulty, difficult)
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APASmart Define. (2016). tough thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 27 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>