129 entries under severe topic. ×

15
unfeeling(adjective, mean, hard, cool, tough)
14
stiff-necked(adjective, strong, hard, tough)
13
hard-hearted(adjective, mean, hard, tough)
13
harsh(adjective, mean, strong, hard, cool)
13
unsympathetic(adjective, mean, hard, cool, tough)
12
heartless(adjective, mean, feeling, hard, cool)
11
flinty(adjective, close, strong, hard, tough)
10
rigorous(adjective, strong, hard, tough)
9
austere(adjective, mean, strong, hard, tough)
9
cold-blooded(adjective, person, mean, hard, cool)
9
hidebound(adjective, determined, resolute, obstinate)
9
merciless(adjective, person, mean, hard, tough)
9
pitiless(adjective, mean, hard, tough)
9
strict(adjective, strong, hard, tough)
9
uncompassionate(adjective, person, mean, hard, cool)
8
cold(adjective, mean, hard, cool, tough)
8
cruel(adjective, mean, strong, hard, cool)
8
dour(adjective, close, hard, tough)
8
ruthless(adjective, mean, hard, tough)
7
insensitive(adjective, mean, hard, cool, tough)
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APASmart Define. (2016). obdurate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obdurate/thesaurus/synonyms
ChicagoSmart Define. 2016. "obdurate thesaurus" https://smartdefine.org/obdurate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, obdurate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obdurate/thesaurus/synonyms>.
MLASmart Define. "obdurate thesaurus" 23 March 2016. Web. 25 September 2026. <https://smartdefine.org/obdurate/thesaurus/synonyms>