- Definitions|1
- Thesaurus|101
- Abbreviations|0
| incessancy | |
| indestructibility | |
| inexhaustibility(noun, infinity) | |
| infinite duration | |
| infiniteness(age, future, infinity, perpetuity, forever) | |
| innumerability(noun, infinity) | |
| instant | |
| instantaneousness | |
| kingdom come(expression, age, future, infinity, perpetuity) | |
| limitlessness(noun, infinity) | |
| never-endingness | |
| other world(expression, age, future, infinity, perpetuity) | |
| perdurability | |
| perenniality | |
| perennialness | |
| perpetualness | |
| perpetuities | |
| time without end(expression, idiom, age, future, infinity) | |
| unceasingness | |
| wild blue yonder(expression, idiom, age, future, infinity) |
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| APA | Smart Define. (2015). timelessness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/timelessness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "timelessness thesaurus" https://smartdefine.org/timelessness/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, timelessness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/timelessness/thesaurus/synonyms>. |
| MLA | Smart Define. "timelessness thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/timelessness/thesaurus/synonyms> |