- Definitions|0
- Thesaurus|626
- Abbreviations|0
100 entries under hard topic. ×
| unfeeling(adjective, tough, rough, harsh) | |
| unkind(adjective, tough, harsh, indifferent) | |
| unresponsive(adjective, indifferent, unkind, insensitive) | |
| unsusceptible(adjective, indifferent, unkind, unresponsive) | |
| unyielding(adjective, strong, sound, tough) | |
| adamant(adjective, strong, tough, fixed) | |
| adamantine(adjective, set, strong, tough) | |
| cohesive(adjective, strong, solid, stiff) | |
| compact(adjective, set, strong, stubborn) | |
| compacted(adjective, set, strong, compact) | |
| compressed(adjective, set, strong, compact) | |
| concentrated(adjective, set, strong, compact) | |
| consolidated(adjective, set, strong, compact) | |
| crass(adjective, indifferent, unkind, unresponsive) | |
| determined(adjective, strong, tough, strong-minded) | |
| ferric(adjective, strong, tough) | |
| ferrous(adjective, strong, tough) | |
| fibrous(adjective, strong, solid, stiff) | |
| fit(adjective, strong, solid, stiff) | |
| impassible(adjective, impassive, insensitive, unsusceptible) |
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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> |