136 entries under firm topic. ×
| hidebound(adjective, moderate, stiff, tense) | |
| inflexible(adjective, strong, secure, moderate, flat) | |
| set in stone(expression, adjective, idiom, secure) | |
| staid(adjective, solid, thoughtful, fixed) | |
| stubborn(adjective, secure, solid, steady) | |
| stuck(adjective, true, still, steady) | |
| true blue(expression, true, fixed, constant) | |
| ardent(adjective, solid, true, fixed) | |
| brick-wall(adjective, solid, steady, fixed) | |
| fortified(adjective, strong, solid, true) | |
| indelible(true, fixed, constant, steadfast) | |
| levelheaded(adjective, sound, pleasant, reasonable, moderate) | |
| located(adjective, secure, solid, steady) | |
| nailed(adjective, strong, secure, solid) | |
| never-failing(adjective, strong, flat, solid) | |
| securely(adverb, firmly) | |
| sedate(adjective, calm, quiet, easy) | |
| self-possessed(adjective, calm, sound, solid) | |
| situated(adjective, secure, solid, steady) | |
| solid as a rock(expression, adjective, idiom, strong) |
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| APA | Smart Define. (2015). stable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, stable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>. |
| MLA | Smart Define. "stable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms> |