7 entries under perpetuity topic. ×
| infinity(noun, eternity, feature, state) | |
| endlessness(noun, feature, time, infinity) | |
| eternity(noun, feature, time, infinity) | |
| everlastingness(noun, infinity, endlessness, eternity) | |
| constancy(noun, infinity, permanence, eternity) | |
| endurance(noun, infinity, permanence, eternity) | |
| permanence(noun, infinity, eternity) |
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| APA | Smart Define. (2011). time frame thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/time_frame/thesaurus/antonyms |
| Chicago | Smart Define. 2011. "time frame thesaurus" https://smartdefine.org/time_frame/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2011, time frame thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/time_frame/thesaurus/antonyms>. |
| MLA | Smart Define. "time frame thesaurus" 24 May 2011. Web. 25 September 2026. <https://smartdefine.org/time_frame/thesaurus/antonyms> |