- Definitions|0
- Thesaurus|178
- Abbreviations|0
15 entries under firmness topic. ×
| stable(adjective, hard, strain, compact) | |
| stiff(adjective, strain, labour, hardiness) | |
| strong(adjective, hard, strain, compact) | |
| firm(adjective, hard, strain, compact) | |
| hard(adjective, strain, compact, dense) | |
| sound(adjective, hard, strain, compact) | |
| substantial(adjective, hard, strain, compact) | |
| durable(adjective, strain, labour, hardiness) | |
| fast(adjective, strain, labour, hardiness) | |
| refractory(adjective, strain, labour, hardiness) | |
| resilient(adjective, strain, labour, hardiness) | |
| stout(adjective, strain, labour, hardiness) | |
| tenable(adjective, strain, labour, hardiness) | |
| tight(adjective, hard, strain, compact) | |
| unyielding(adjective, hard, strain, compact) |
For more, visit
Rock-solid on
Power Thesaurus
| APA | Smart Define. (2011). rock-solid thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rock-solid/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "rock-solid thesaurus" https://smartdefine.org/rock-solid/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2011, rock-solid thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rock-solid/thesaurus/synonyms>. |
| MLA | Smart Define. "rock-solid thesaurus" 24 May 2011. Web. 26 September 2026. <https://smartdefine.org/rock-solid/thesaurus/synonyms> |