112 entries under firm topic. ×
| rocky(adjective, stiff, rigid) | |
| secure(adjective, calm, strong, sound, tough) | |
| set in stone(expression, adjective, idiom, calm, strong) | |
| solid as a rock(expression, adjective, idiom, calm, strong) | |
| sure(adjective, calm, strong, secure) | |
| unvarying(adjective, calm, strong, secure) | |
| ardent(adjective, solid, true, stable) | |
| balanced(adjective, calm, strong, secure) | |
| brick-wall(adjective, calm, strong, secure) | |
| calm(adjective, strong, secure, solid) | |
| equable(adjective, calm, strong, secure) | |
| even(adjective, calm, strong, secure) | |
| fastened(strong, secure, true, substantial) | |
| indelible(adjective, true, fixed, constant) | |
| loyal(adjective, solid, true, stable) | |
| poised(adjective, calm, strong, secure) | |
| resolute(adjective, calm, strong, secure) | |
| safe(adjective, calm, strong, secure) | |
| uniform(adjective, calm, strong, secure) | |
| unwavering(adjective, calm, strong, secure) |
For more, visit
Durable on
Power Thesaurus
| APA | Smart Define. (2015). durable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/durable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, durable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>. |
| MLA | Smart Define. "durable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms> |