- Definitions|2
- Thesaurus|1.7k
- Abbreviations|0
101 entries under fixed topic. ×
| substantial(adjective, calm, strong, sound, secure) | |
| stabile(adjective, calm, strong, secure, strain) | |
| continuing(noun, verb, adjective, increase, strength) | |
| immutable(adjective, calm, strong, secure, firm) | |
| unchanging(adjective, close, correct, firm, honest) | |
| unwavering(adjective, calm, close, strong, secure) | |
| changeless(adjective, firm, solid, certain, stable) | |
| imperishable(adjective, constant, lasting, durable) | |
| unfaltering(adjective, complete, firm, total, solid) | |
| chronic(adjective, persistent, constant, current) | |
| resolute(adjective, calm, close, strong, secure) | |
| unchangeable(adjective, calm, strong, secure, flat) | |
| unqualified(adjective, strong, complete, flat, firm) | |
| unvarying(adjective, calm, strong, secure, firm) | |
| lifelong(adjective, familiar, established, hardened) | |
| secure(adjective, calm, strong, sound, tough) | |
| staunch(adjective, calm, close, strong, sound) | |
| sturdy(adjective, calm, strong, sound, secure) | |
| unchanged(static, unchangeable) | |
| ageless(adjective, unchanging, permanent, static) |
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| APA | Smart Define. (2016). enduring thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/enduring/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "enduring thesaurus" https://smartdefine.org/enduring/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, enduring thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/enduring/thesaurus/synonyms>. |
| MLA | Smart Define. "enduring thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/enduring/thesaurus/synonyms> |