44 entries under rigid topic. ×
| refractory(hard, tough, solid, inflexible) | |
| rocky(adjective, set, strong, hard, firm) | |
| sturdy(hard, tough, solid, inflexible) | |
| unbreakable(adjective, firm, stiff) |
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| APA | Smart Define. (2016). compressed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/compressed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "compressed thesaurus" https://smartdefine.org/compressed/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, compressed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/compressed/thesaurus/synonyms>. |
| MLA | Smart Define. "compressed thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/compressed/thesaurus/synonyms> |