- Definitions|0
- Thesaurus|626
- Abbreviations|0
54 entries under callous topic. ×
| obtuse(adjective, hard, indifferent, unfeeling, unkind) | |
| pitiless(adjective, cruel, vicious, fixed, unfeeling) | |
| tactless(adjective, hard, indifferent, unkind, unresponsive) | |
| thick-skinned(adjective, calm, hard, cool, tough) | |
| unashamed(adjective, unfeeling, unbending, toughened) | |
| unconcerned(adjective, hard, indifferent, unkind, unresponsive) | |
| unfeeling(adjective, hard, tough, rough, harsh) | |
| unkind(adjective, hard, tough, harsh, indifferent) | |
| unrepenting(adjective, unfeeling, unbending, toughened) | |
| unresponsive(adjective, hard, indifferent, unkind, insensitive) | |
| unsubmissive(adjective, unfeeling, unbending, toughened) | |
| unsusceptible(adjective, hard, indifferent, unkind, unresponsive) | |
| blind to(expression, adjective, disciplined, unexcitable) | |
| brutal(adjective, tough, harsh, cruel, grim) | |
| casehardened(adjective, disciplined, unexcitable, grooved) | |
| cold-blooded(adjective, tough, harsh, cruel, grim) | |
| cold-hearted(adjective, cruel, unfeeling, insensitive) | |
| crass(adjective, hard, indifferent, unkind, unresponsive) | |
| deaf to(expression, adjective, disciplined, unexcitable) | |
| hard-hearted(adjective, cruel, stiff, unfeeling, insensitive) |
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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> |