200 entries under solid topic. ×
| resolute(adjective, strong, secure, easy, flat) | |
| safe(adjective, good, strong, complete, secure) | |
| abiding(adjective, quality, strong, tough, flat) | |
| changeless(adjective, smooth, right, firm) | |
| responsible(adjective, good, strong, true) | |
| certain(adjective, good, strong, easy, firm) | |
| faithful(adjective, good, strong, sound, firm) | |
| immobile(adjective, calm, dull, strong, secure) | |
| normal(adjective, sound, reasonable, clean, sensible) | |
| sane(adjective, sound, complete, reasonable, sensible) | |
| trustworthy(adjective, good, strong, sound, honest) | |
| unfailing(adjective, good, strong, true) | |
| powerful(adjective, strong, sound, tough) | |
| stalwart(adjective, strong, sound, tough, firm) | |
| true(adjective, good, strong, smooth, right) | |
| trusty(adjective, good, strong, honest) | |
| unshakable(adjective, strong, hard, secure, continue) | |
| anchored(adjective, strong, secure, firm) | |
| determined(adjective, good, strong, easy, flat) | |
| devoted(adjective, good, strong, honest) |
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| APA | Smart Define. (2015). stable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, stable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>. |
| MLA | Smart Define. "stable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms> |