48 entries under permanent topic. ×
| lifelong | |
| long-lasting(stable, constant, enduring, lasting) | |
| long-term(adjective, vast, lifelong, diurnal) | |
| longstanding(adjective, vast, long-term, lifelong) | |
| old(long-term, lifelong) | |
| ongoing(long-term, lifelong) | |
| perdurable(stable, constant, enduring, lasting) | |
| perennial(adjective, stable, constant, enduring, lasting) | |
| persisting(long-term, lifelong) | |
| relentless(lasting, on, everlasting, unending) | |
| stable(constant, enduring, lasting, perpetual) | |
| termless(adjective, vast, lasting, everlasting) | |
| timeless(adjective, vast, lasting, everlasting) | |
| unchanging(stable, constant, enduring, lasting) | |
| undying(enduring, lasting, everlasting, perpetual) | |
| unending(adjective, enduring, lasting, infinite) | |
| unfading(adjective, stable, constant, enduring, lasting) | |
| unremitting(relentless, lasting, on, everlasting) | |
| fixed(stable, constant, enduring, lasting) | |
| deep-rooted(long-term, lifelong) |
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| APA | Smart Define. (2015). forever thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/forever/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "forever thesaurus" https://smartdefine.org/forever/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, forever thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/forever/thesaurus/synonyms>. |
| MLA | Smart Define. "forever thesaurus" 15 December 2015. Web. 22 September 2026. <https://smartdefine.org/forever/thesaurus/synonyms> |