98 entries under merciless topic. ×
| unyielding(adjective, mean, clear, hard, tough) | |
| vindictive(adjective, mean, hard, tough, nasty) | |
| evil(adjective, mean, nasty, harsh, violent) | |
| stiff(adjective, hard, rough, harsh, cruel) | |
| surly(adjective, mean, harsh, cruel, vicious) | |
| adamant(adjective, mean, hard, rough, harsh) | |
| bound(adjective, harsh, cruel, determined, persistent) | |
| bound and determined(expression, adjective, idiom, harsh, cruel) | |
| dead set on(expression, adjective, idiom, harsh, cruel) | |
| degenerate(adjective, evil, nasty, harsh, violent) | |
| determined(adjective, clear, tough, severe, harsh) | |
| dogged(adjective, harsh, cruel, determined, persistent) | |
| flinty(adjective, evil, nasty, harsh, cruel) | |
| go for broke(expression, adjective, idiom, harsh, cruel) | |
| hang-tough(adjective, harsh, cruel, determined, persistent) | |
| hang in(expression, adjective, harsh, cruel, determined) | |
| hard-nosed(adjective, clear, hard, tough, severe) | |
| hardhearted(adjective, mean, severe, harsh, cruel) | |
| hateful(adjective, animal, mean, severe, evil) | |
| inflexible(adjective, hard, rough, harsh, cruel) |
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| APA | Smart Define. (2016). fierce thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fierce/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fierce thesaurus" https://smartdefine.org/fierce/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, fierce thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fierce/thesaurus/synonyms>. |
| MLA | Smart Define. "fierce thesaurus" 28 March 2016. Web. 29 September 2026. <https://smartdefine.org/fierce/thesaurus/synonyms> |