140 entries under fixed topic. ×
| ineradicable(adjective, persistent, continuous, lasting) | |
| inevitable(complete, firm, certain, obedient) | |
| intense(adjective, keen, firm, sensible, solid) | |
| intransigent(adjective, secure, steady, persistent) | |
| levelheaded(adjective, pleasant, reasonable, moderate, firm) | |
| like the Rock of Gibralter(expression, adjective, idiom, persistent) | |
| monochrome(adjective, persistent, continuous, endless) | |
| monophonic(adjective, persistent, continuous, endless) | |
| never-failing(adjective, clear, strong, flat, firm) | |
| obdurate(adjective, strong, secure, flat, certain) | |
| poised(adjective, calm, strong, secure, firm) | |
| regularized(adjective, persistent, continuous, endless) | |
| rooted(usual, steady, impassive, inflexible) | |
| safe(adjective, calm, good, strong, secure) | |
| sedate(adjective, firm, sensible, solid, steady) | |
| sensible(adjective, reasonable, moderate, firm, honest) | |
| serene(adjective, calm, quiet, smooth, friendly) | |
| set in concrete(expression, idiom, impassive, inflexible) | |
| set in stone(expression, adjective, idiom, calm, strong) | |
| solid as a rock(expression, adjective, idiom, calm, strong) |
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| APA | Smart Define. (2016). constant thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/constant/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "constant thesaurus" https://smartdefine.org/constant/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, constant thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/constant/thesaurus/synonyms>. |
| MLA | Smart Define. "constant thesaurus" 12 February 2016. Web. 21 September 2026. <https://smartdefine.org/constant/thesaurus/synonyms> |