- Definitions|0
- Thesaurus|626
- Abbreviations|0
307 entries under adjective topic. ×
| austere(tough, harsh, cruel, grim) | |
| barbarous(vicious, savage, pitiless, ruthless) | |
| bent(serious, resolute, persistent, driven) | |
| bent on(expression, serious, resolute, persistent) | |
| benumbed(unfeeling, unbending, toughened, seasoned) | |
| bitter(tough, harsh, cruel, grim) | |
| bleak(tough, severe, harsh, cruel) | |
| blind to(expression, callous, disciplined, unexcitable) | |
| bloodthirsty(vicious, savage, pitiless, ruthless) | |
| brutal(tough, harsh, cruel, grim) | |
| buckled down(expression, serious, resolute, persistent) | |
| calm(cool, steady, collected, unflappable) | |
| casehardened(callous, disciplined, unexcitable, grooved) | |
| cohesive(strong, hard, solid, stiff) | |
| cold(tough, harsh, cruel, grim) | |
| cold-blooded(tough, harsh, cruel, grim) | |
| cold-hearted(cruel, unfeeling, insensitive, callous) | |
| collected(calm, cool, steady, unaffected) | |
| compact(set, strong, hard, stubborn) | |
| compacted(set, strong, hard, compact) |
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| APA | Smart Define. (2015). hard as nails thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/hard_as_nails/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hard as nails thesaurus" https://smartdefine.org/hard_as_nails/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, hard as nails thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/hard_as_nails/thesaurus/synonyms>. |
| MLA | Smart Define. "hard as nails thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/hard_as_nails/thesaurus/synonyms> |