128 entries under heartless topic. ×
| cold-blooded(adjective, person, mean, cool, tough) | |
| hardened(adjective, tough, severe, firm, attitude) | |
| ruthless(adjective, mean, tough, severe, evil) | |
| uncompromising(adjective, mean, severe, rough, difficult) | |
| unkind(adjective, person, mean, cool, tough) | |
| exacting(adjective, dull, tough, easy, severe) | |
| hardhearted(adjective, person, mean, severe, attitude) | |
| unbending(adjective, mean, strong, tough, severe) | |
| unrelenting(adjective, mean, strong, tough, severe) | |
| pitiless(adjective, mean, tough, severe, nasty) | |
| inexorable(adjective, mean, strong, tough, severe) | |
| mean(adjective, person, cool, tough, severe) | |
| relentless(adjective, mean, strong, tough, severe) | |
| unforgiving(adjective, mean, tough, severe, rough) | |
| unsparing(adjective, mean, strong, tough, severe) | |
| aloof(adjective, person, mean, cool, unpleasant) | |
| icy(adjective, person, mean, cool, tough) | |
| implacable(adjective, mean, strong, tough, severe) | |
| indifferent(adjective, person, mean, cool, unpleasant) | |
| inhuman(adjective, mean, tough, severe, evil) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |