- Definitions|0
- Thesaurus|626
- Abbreviations|0
100 entries under hard topic. ×
| vigorous(adjective, strong, sound, tough) | |
| aloof(adjective, tough, firm, indifferent) | |
| bloodless(adjective, indifferent, unkind, unresponsive) | |
| brawny(adjective, strong, solid, powerful) | |
| callous(adjective, set, strong, tough) | |
| coldhearted(adjective, indifferent, unfeeling, unkind) | |
| conditioned(adjective, strong, solid, stiff) | |
| cruel(adjective, strong, tough, vicious) | |
| durable(adjective, strong, sound, tough) | |
| feelingless(adjective, indifferent, unfeeling, unkind) | |
| firm(adjective, set, strong, sound) | |
| hard-boiled(adjective, tough, harsh, indifferent) | |
| hard-handed(adjective, set, strong, continue) | |
| hardened(adjective, set, strong, tough) | |
| hardhearted(adjective, indifferent, unfeeling, unkind) | |
| healthy(adjective, strong, solid, heavy) | |
| heartless(adjective, feeling, cold, indifferent) | |
| heavy(adjective, strong, sound, tough) | |
| immovable(adjective, calm, strong, cool) | |
| impenetrable(adjective, set, strong, firm) |
For more, visit
Hard_as_nails on
Power Thesaurus
| 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> |