88 entries under harsh topic. ×

15
implacable(adjective, mean, strong, hard, tough)
14
hard-nosed(adjective, mean, strong, hard, secure)
14
stern(adjective, mean, hard, rough, firm)
11
grim(adjective, mean, strong, hard, tough)
9
severe(adjective, mean, strong, hard, tough)
9
unforgiving(adjective, person, mean, hard, rough)
8
rigorous(adjective, strong, hard, tough)
8
strict(adjective, strong, hard, tough, flat)
7
remorseless(adjective, mean, tough, resist)
7
single-minded(adjective, tough, cruel, determined)
6
callous(adjective, person, mean, hard, rough)
5
merciless(adjective, person, mean, hard, rough)
5
unalterable(adjective, strong, hard, secure, severe)
5
unappeasable(adjective, mean, cruel, determined)
5
unflinching(adjective, strong, flat, firm)
5
unsympathetic(adjective, mean, hard, tough)
4
austere(adjective, strong, hard, tough, severe)
4
hard-boiled(adjective, person, mean, strong, hard)
4
hard-hearted(adjective, mean, hard, tough)
4
unfeeling(adjective, mean, hard, tough)
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APASmart Define. (2016). adamant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/adamant/thesaurus/synonyms
ChicagoSmart Define. 2016. "adamant thesaurus" https://smartdefine.org/adamant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>