69 entries under compact topic. ×
| restricted(verb, adjective, solid, dense) | |
| rock(adjective, strong, hard, substantial) | |
| rock-hard(adjective, hard, dense) | |
| rock-solid(adjective, hard, dense, rock-hard) | |
| rocky(adjective, set, strong, hard, firm) | |
| rooted(adjective, strong, hard, substantial) | |
| secure(adjective, strong, hard, substantial) | |
| stable(adjective, strong, hard, substantial) | |
| unshakable(adjective, strong, hard, substantial) |
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| APA | Smart Define. (2015). concentrated thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/concentrated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "concentrated thesaurus" https://smartdefine.org/concentrated/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, concentrated thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/concentrated/thesaurus/synonyms>. |
| MLA | Smart Define. "concentrated thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/concentrated/thesaurus/synonyms> |