320 entries under severe topic. ×

29
taxing(adjective, tough, rough, difficult)
28
stern(adjective, person, mean, tough, easy)
28
unsympathetic(adjective, person, mean, cool, tough)
26
solid(adjective, adverb, characteristic, person, body)
25
callous(adjective, mean, cool, tough)
25
obdurate(adjective, mean, strong, cool, tough)
25
unfeeling(adjective, person, mean, cool, tough)
25
cold(adjective, person, mean, clear, cool)
25
grave(adjective, tough, difficult, harsh)
25
hard-nosed(adjective, mean, strong, tough)
25
serious(adjective, strong, tough, easy)
23
brutal(adjective, person, mean, tough)
23
nasty(adjective, mean, cool, tough)
22
demanding(adjective, dull, tough, easy)
21
austere(adjective, strong, tough, rough)
21
grim(adjective, person, mean, strong, tough)
21
stony(adjective, mean, cool, tough)
20
disturbing(adjective, mean, difficult, harsh)
20
merciless(adjective, mean, tough, evil)
20
strict(adjective, strong, tough, easy)
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APASmart Define. (2016). hard thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, hard thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>.
MLASmart Define. "hard thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms>