112 entries under firm topic. ×
| adherent(true, fixed, constant, steadfast) | |
| allegiant(adjective, solid, stable, fixed) | |
| attached(true, fixed, constant, steadfast) | |
| callous(adjective, stiff, rigid) | |
| certain(adjective, solid, stable, fixed) | |
| close(true, fixed, constant, steadfast) | |
| compact(adjective, stiff, rigid) | |
| compacted(adjective, stiff, rigid) | |
| compressed(adjective, stiff, rigid) | |
| concentrated(adjective, stiff, rigid) | |
| consolidated(adjective, stiff, rigid) | |
| constrained(true, fixed, constant, steadfast) | |
| cool(adjective, solid, stable, fixed) | |
| fortified(true, fixed, constant, steadfast) | |
| glued(true, fixed, constant, steadfast) | |
| hardened(adjective, strong, hard, solid) | |
| held(true, fixed, constant, steadfast) | |
| impenetrable(adjective, stiff, rigid) | |
| imperturbable(adjective, solid, stable, fixed) | |
| indurate(adjective, stiff, rigid) |
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| 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> |