- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
164 entries under harsh topic. ×
| fussy(adjective, thoughtful, sober, rigid) | |
| onerous(adjective, hard, severe, rough, difficult) | |
| unrelenting(adjective, strong, hard, tough, severe) | |
| Draconian(adjective, tough, severe, firm) | |
| extreme(adjective, severe, cruel, brutal) | |
| puritanical(adjective, tough, severe, firm) | |
| undeviating(adjective, severe, solid, exact) | |
| unsparing(adjective, strong, hard, tough, severe) | |
| acrimonious(adjective, tough, severe, grim) | |
| adamantine(adjective, set, strong, hard, tough) | |
| bleak(adjective, tough, severe, cruel) | |
| determined(adjective, severe, solid, intense) | |
| flinty(adjective, strong, hard, tough, severe) | |
| intemperate(adjective, hard, tough, severe, rough) | |
| prudish(adjective, tough, severe, firm) | |
| strait-laced(adjective, tough, severe, firm) | |
| strenuous(adjective, hard, tough, severe, rough) | |
| stubborn(adjective, strong, hard, tough, severe) | |
| authoritarian(adjective, strong, hard, tough, severe) | |
| drastic(adjective, severe, cruel, brutal) |
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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> |