182 entries under firm topic. ×
| unvarying(adjective, calm, strong, fast) | |
| enduring(adjective, calm, strong, sound, tough) | |
| hardened(adjective, set, strong, hard, tough) | |
| hardheaded(adjective, inflexible, obstinate, stubborn) | |
| incompressible(adjective, strong, resist, density) | |
| inelastic(adjective, hard, tough, severe) | |
| levelheaded(adjective, open, reasonable, honest) | |
| loyal(adjective, good, strong, honest) | |
| obstinate(adjective, strong, tough, determined) | |
| settled(adjective, strong, secure, easy) | |
| unswerving(adjective, strong, complete, smooth, tough) | |
| abiding(adjective, calm, strong, certain) | |
| allegiant(adjective, stable, fixed, sturdy) | |
| balanced(adjective, calm, strong, easy) | |
| brittle(adjective, hard, stiff, tense) | |
| even(verb, adjective, calm, strong, sound) | |
| imperturbable(adjective, certain, stable, fixed) | |
| intense(adjective, complete, total, enthusiastic) | |
| iron(adjective, set, strong, hard, tough) | |
| liege(adjective, stable, fixed, sturdy) |
For more, visit
Solid on
Power Thesaurus
| APA | Smart Define. (2016). solid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/solid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, solid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>. |
| MLA | Smart Define. "solid thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms> |