183 entries under firm topic. ×
| compressed(adjective, set, strong, hard, tough) | |
| contumacious(adjective, tough, persistent, obstinate) | |
| recalcitrant(adjective, tough, persistent, obstinate) | |
| square(adjective, tough, moderate, severe) | |
| starched(adjective, hard, solid, stiff) | |
| thick(adjective, strong, hard, tough) | |
| unsparing(adjective, strong, hard, tough, severe) | |
| uptight(adjective, tough, moderate, severe) | |
| cussed(adjective, severe, unreasonable, grim) | |
| customary(adjective, determined, usual, regular) | |
| graceless(adjective, hard, solid, stiff) | |
| impenetrable(adjective, set, strong, hard, tough) | |
| located(secure, solid, stiff, inflexible) | |
| opinionated(adjective, tough, unreasonable, inflexible) | |
| rooted(adjective, secure, determined, usual) | |
| self-willed(adjective, tough, inflexible, obstinate) | |
| straight(adjective, tough, correct, moderate, severe) | |
| unmovable(adjective, cruel, fixed, resolute) | |
| bound(adjective, harsh, cruel, determined) | |
| brittle(adjective, hard, solid, stiff) |
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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> |