Synonyms|118Antonyms|16|Broader|0Narrower|0Related|111

112 entries under adjective topic. ×

1
hard-boiled(hard, unfeeling, unsympathetic, hardened)
1
hardboiled(determined, serious, resolute, persistent)
1
hardened(hard, tough, unfeeling, unsympathetic)
1
hardhearted(hard, unfeeling, unsympathetic, hardened)
1
heartless(hard, unfeeling, unsympathetic, hardened)
1
impenetrable(hard, unfeeling, unsympathetic, prepared)
1
impious(hard, unfeeling, unsympathetic, prepared)
1
inaccessible(hard, unfeeling, unsympathetic, prepared)
1
indurated(hard, unfeeling, unsympathetic, hardened)
1
intent(serious, resolute, persistent, unwavering)
1
inured(hard, unfeeling, unsympathetic, hardened)
1
irreverent(hard, unfeeling, unsympathetic, prepared)
1
mean business(expression, serious, resolute, persistent)
1
obdurate(hard, unfeeling, unsympathetic, hardened)
1
obstinate(serious, resolute, persistent, unwavering)
1
obtuse(hard, unfeeling, unsympathetic, prepared)
1
on ice(expression, serious, resolute, persistent)
1
pat(serious, resolute, persistent, unwavering)
1
persevering(serious, resolute, persistent, unwavering)
1
persistent(serious, resolute, unwavering, gritty)
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APASmart Define. (2011). hard-as-nails thesaurus. Retrieved September 29, 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 29, 2026).
HarvardSmart Define 2011, hard-as-nails thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/hard-as-nails/thesaurus/synonyms>.
MLASmart Define. "hard-as-nails thesaurus" 24 May 2011. Web. 29 September 2026. <https://smartdefine.org/hard-as-nails/thesaurus/synonyms>