- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
164 entries under harsh topic. ×
| impenitent(adjective, hard, tough, cruel) | |
| inhumane(adjective, hard, tough, cruel) | |
| insensitive(adjective, hard, tough, cruel) | |
| irksome(adjective, tough, severe, rough, difficult) | |
| iron-fisted(adjective, tough, severe, firm) | |
| mortal(adjective, cruel, determined, fierce) | |
| mortified(adjective, strong, hard, tough, severe) | |
| mulish(adjective, strong, hard, tough, severe) | |
| powerful(adjective, severe, rigid, tight) | |
| sanguinary(adjective, hard, tough, cruel) | |
| serious(adjective, strong, hard, tough, severe) | |
| set(adjective, hard, tough, severe, firm) | |
| shameless(adjective, hard, tough, cruel) | |
| single-minded(adjective, cruel, determined, fierce) | |
| sour(adjective, hard, tough, cruel) | |
| stickling(adjective, tough, severe, firm) | |
| stop at nothing(expression, adjective, idiom, cruel) | |
| straight(adjective, tough, correct, severe, firm) | |
| stuffy(adjective, tough, severe, firm) | |
| unappeasable(adjective, cruel, determined, fierce) |
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| APA | Smart Define. (2016). rigorous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigorous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "rigorous thesaurus" https://smartdefine.org/rigorous/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, rigorous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigorous/thesaurus/synonyms>. |
| MLA | Smart Define. "rigorous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/rigorous/thesaurus/synonyms> |