- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
211 entries under severe topic. ×
| rugged(adjective, strong, hard, tough) | |
| short | |
| sour(adjective, hard, tough, harsh) | |
| spare | |
| spartan | |
| strong(adjective, hard, tough, firm) | |
| tart | |
| tigerish(adjective, strong, intense, violent) | |
| truculent(adjective, animal, appearance, mean, strong) | |
| uncalled-for(adjective, mean, harsh, cruel) | |
| unchanging(adjective, close, firm, harsh) | |
| ungracious(adjective, hard, sharp, nasty) | |
| unkind(adjective, animal, mean, hard) | |
| untamed(adjective, strong, intense, violent) | |
| vengeful(adjective, mean, evil, nasty) | |
| venomous(adjective, mean, strong, intense) | |
| violent(adjective, strong, difficult, harsh) | |
| wanton(adjective, mean, harsh, cruel) | |
| wicked(adjective, hard, evil, sharp) | |
| wild(adjective, strong, difficult, intense) |
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| APA | Smart Define. (2015). relentless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/relentless/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "relentless thesaurus" https://smartdefine.org/relentless/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, relentless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/relentless/thesaurus/synonyms>. |
| MLA | Smart Define. "relentless thesaurus" 24 June 2015. Web. 26 September 2026. <https://smartdefine.org/relentless/thesaurus/synonyms> |