128 entries under heartless topic. ×
| numb(adjective, tough, severe, cruel, unsympathetic) | |
| rancorous(adjective, mean, love, evil, nasty) | |
| unresponsive(adjective, mean, cool, unpleasant, careless) | |
| case-hardened(adjective, careless, indifferent, cruel, apathetic) | |
| impenitent(adjective, tough, harsh, careless, indifferent) | |
| insensate(adjective, tough, severe, careless, indifferent) | |
| unappeasable(adjective, mean, severe, harsh, cruel) | |
| unconcerned(adjective, mean, cool, unpleasant, careless) | |
| unpitying(adjective, mean, cool, severe, harsh) | |
| barbarous(adjective, mean, tough, severe, evil) | |
| cantankerous(adjective, mean, tough, severe, evil) | |
| compassionless(adjective, mean, severe, attitude, harsh) | |
| hard as nails(expression, adjective, idiom, set, strong) | |
| toughened(adjective, strong, careless, indifferent, cruel) | |
| vicious(adjective, mean, severe, evil, rough) | |
| anesthetized(adjective, tough, severe, cruel, unfeeling) | |
| bloodless(adjective, indifferent, unkind, inflexible, unresponsive) | |
| dog-eat-dog(adjective, mean, severe, harsh, cruel) | |
| feral(adjective, mean, harsh, cruel, vicious) | |
| ferocious(adjective, mean, evil, rough, nasty) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |