183 entries under firm topic. ×
| stickling(adjective, tough, correct, severe) | |
| stiff as a board(expression, adjective, idiom, hard) | |
| stipulated(adjective, determined, usual, regular) | |
| thickened(adjective, hard, solid, stiff) | |
| unflappable(adjective, determined, usual, regular) | |
| unreasonable(tough, inflexible, obstinate, stubborn) | |
| unsupple(adjective, hard, solid, stiff) | |
| untoward(tough, unreasonable, inflexible, obstinate) | |
| well-set(adjective, determined, usual, regular) | |
| appointed(adjective, determined, usual, regular) | |
| arrect(adjective, straight, upright) | |
| cocked(adjective, straight, upright) | |
| compacted(adjective, set, strong, hard) | |
| consolidated(adjective, set, strong, hard) | |
| elevated(adjective, straight, upright) | |
| incompressible | |
| perpendicular(adjective, straight, upright) | |
| raised(adjective, straight, upright) | |
| rocky(adjective, set, strong, hard) | |
| standing(adjective, still, straight, upright) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 26 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |