| habitually(adverb, ever, evermore, eternally, for keeps) | |
| inevitably(adverb, ever, evermore, eternally, for keeps) | |
| infiniteness(noun, age, future, infinity, perpetuity) | |
| unceasing(lasting, permanent, everlasting, unending, long-term) | |
| endurance(noun, perpetuity) | |
| inexpungible(adjective, vast, permanent, long-term, lifelong) | |
| conk out(verb, phrasal verb) | |
| excel in(verb, expression, phrasal verb) | |
| fetch | |
| give way(verb, phrasal verb) | |
| massive | |
| once again | |
| sempiternal(adjective, eternal) | |
| ceaselessly | |
| continual(adjective, stable, constant, enduring, lasting) | |
| everlastingness(noun, age, future, infinity, perpetuity) | |
| grow | |
| immeasurability | |
| immemorial(adjective, old, vast, lasting, permanent) | |
| immensity |
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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> |