| unchanging(stable, constant, enduring, lasting, permanent) | |
| undefined(adjective, infinite) | |
| undying(enduring, lasting, permanent, everlasting, perpetual) | |
| unending(adjective, enduring, lasting, infinite, permanent) | |
| unfading(adjective, stable, constant, enduring, lasting) | |
| universality | |
| unlimited time(noun, expression, eternity) | |
| unmeasurability | |
| unremitting(relentless, lasting, permanent, on, everlasting) | |
| vast(adjective, large, wide) | |
| without limit | |
| without stopping(expression, adverb, relentless, unremitting, on) | |
| yonks | |
| ad-infinitum | |
| afford | |
| all along(verb, phrasal verb) | |
| all during(expression, idiom) | |
| all time | |
| alpha and omega(expression, idiom) | |
| anytime |
For more, visit
Forever on
Power Thesaurus
| 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> |