87 entries under severe topic. ×
| grim(adjective, mean, harsh, violent) | |
| insensible(adjective, hard, cool, tough) | |
| fierce(adjective, mean, evil, nasty) | |
| unsparing(adjective, mean, harsh, cruel) | |
| bloodthirsty(adjective, evil, nasty, harsh) | |
| unrelenting(adjective, mean, evil, nasty) | |
| bestial(adjective, mean, evil, nasty) | |
| compassionless(adjective, mean, hard, attitude) | |
| implacable(adjective, mean, hard, evil) | |
| inexorable(adjective, mean, hard, tough) | |
| benumbed(adjective, hard, tough, cruel) | |
| cold fish(expression, adjective, mean, feeling, hard) | |
| dog-eat-dog(adjective, mean, hard, harsh) | |
| insensate(adjective, hard, tough, careless) | |
| monstrous(adjective, evil, nasty, harsh) | |
| vindictive(adjective, mean, nasty, harsh) | |
| wanton(adjective, mean, harsh, cruel) | |
| asleep(adjective, hard, tough, cruel) | |
| cantankerous(adjective, hard, tough, cruel) | |
| churlish(adjective, hard, tough, cruel) |
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| APA | Smart Define. (2016). heartless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heartless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "heartless thesaurus" https://smartdefine.org/heartless/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, heartless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heartless/thesaurus/synonyms>. |
| MLA | Smart Define. "heartless thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/heartless/thesaurus/synonyms> |