- Definitions|0
- Thesaurus|626
- Abbreviations|0
307 entries under adjective topic. ×
| compressed(set, strong, hard, compact) | |
| concentrated(set, strong, hard, compact) | |
| consolidated(set, strong, hard, compact) | |
| constant(serious, resolute, persistent, driven) | |
| contemptuous(unfeeling, unbending, toughened, seasoned) | |
| cool(calm, steady, collected, unflappable) | |
| cool cat(expression, unfeeling, hard-hearted, nowhere) | |
| crass(hard, indifferent, unkind, unresponsive) | |
| cutthroat | |
| deaf to(expression, callous, disciplined, unexcitable) | |
| decided(serious, resolute, persistent, driven) | |
| decisive(serious, resolute, persistent, driven) | |
| determined(strong, hard, tough, strong-minded) | |
| disagreeable(tough, severe, harsh, cruel) | |
| disdainful(unfeeling, unbending, toughened, seasoned) | |
| distressing(tough, severe, harsh, grim) | |
| dog-eat-dog(vicious, pitiless, ruthless) | |
| dogged(serious, resolute, persistent, driven) | |
| dour(tough, severe, harsh, cruel) | |
| driven(serious, resolute, persistent) |
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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> |