112 entries under adjective topic. ×

1
accustomed(hard, unfeeling, unsympathetic, prepared)
1
bent(serious, resolute, persistent, unwavering)
1
bent on(expression, serious, resolute, persistent)
1
benumbed(hard, unfeeling, unsympathetic, prepared)
1
buckled down(expression, serious, resolute, persistent)
1
callous(hard, unfeeling, unsympathetic, prepared)
1
case-hardened(hard, unfeeling, unsympathetic, prepared)
1
coldhearted(hard, unfeeling, unsympathetic, prepared)
1
constant(serious, resolute, persistent, pat)
1
contemptuous(hard, unfeeling, unsympathetic, prepared)
1
cruel(hard, unfeeling, unsympathetic, hardened)
1
decided(serious, resolute, persistent, unwavering)
1
decisive(serious, resolute, persistent, unwavering)
1
disdainful(hard, unfeeling, unsympathetic, prepared)
1
dogged(serious, resolute, persistent, unwavering)
1
driven(serious, resolute, persistent, pat)
1
earnest(determined, serious, resolute, persistent)
1
fixed(serious, resolute, persistent, unwavering)
1
habituated(hard, unfeeling, unsympathetic, prepared)
1
hard-bitten(hard, unfeeling, unsympathetic, hardened)
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APASmart Define. (2011). hard-as-nails thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-as-nails/thesaurus/synonyms
ChicagoSmart Define. 2011. "hard-as-nails thesaurus" https://smartdefine.org/hard-as-nails/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2011, hard-as-nails thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-as-nails/thesaurus/synonyms>.
MLASmart Define. "hard-as-nails thesaurus" 24 May 2011. Web. 28 September 2026. <https://smartdefine.org/hard-as-nails/thesaurus/synonyms>