- Definitions|2
- Thesaurus|3.3k
- Abbreviations|0
87 entries under rigid topic. ×
| unrelenting(adjective, strong, hard, tough, severe) | |
| acrimonious(adjective, tough, severe, harsh, cruel) | |
| confining(adjective, severe, harsh, stiff) | |
| difficult(adjective, hard, tough, severe, rough) | |
| hard-and-fast(adjective, hard, inflexible, obstinate) | |
| hard-line(adjective, strong, hard, tough, severe) | |
| intractable(adjective, hard, persistent, obstinate) | |
| picky(adjective, severe, firm, harsh, careful) | |
| resolved(adjective, definite, persistent, obstinate) | |
| unchangeable(adjective, strong, hard, certain, definite) | |
| unpermissive(adjective, hard, severe, rough, firm) | |
| unwavering(adjective, close, strong, correct, flat) | |
| hard-nosed(adjective, strong, hard, tough, severe) | |
| immovable(adjective, set, strong, hard, tough) | |
| immutable(hard, inflexible, obstinate, stubborn) | |
| indomitable(adjective, strong, hard, tough, resolute) | |
| iron(adjective, hard, persistent, obstinate) | |
| rough(adjective, strong, hard, tough, severe) | |
| solid(adjective, correct, severe, exact, proper) | |
| steady(adjective, close, strong, correct, flat) |
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| APA | Smart Define. (2015). strict thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/strict/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "strict thesaurus" https://smartdefine.org/strict/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, strict thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/strict/thesaurus/synonyms>. |
| MLA | Smart Define. "strict thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/strict/thesaurus/synonyms> |