- Definitions|1
- Thesaurus|26
- Abbreviations|0
| eternity(noun, time, forever) | |
| time immemorial(noun, expression, time, forever, eternity) | |
| age(noun, time) | |
| ages(noun, forever, eternity) | |
| blue moon(noun, time, forever) | |
| time out of mind(noun, expression, idiom, memory, eternity) | |
| aeon | |
| aeons ago(noun, expression, eternity, ages) | |
| dog's age(noun, forever) | |
| eon(noun, time) | |
| forever and a day(expression, idiom, eternity) | |
| indefinitely long period(noun, forever) | |
| lifetime(noun, forever) | |
| long(noun, time) | |
| long time(noun, expression, eternity) | |
| remote ages(noun, expression, eternity, ages) | |
| right smart spell(expression, idiom, eternity) | |
| time long past(noun, expression, idiom, eternity) | |
| when pigs fly(noun, forever) | |
| year(noun, time) |
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| APA | Smart Define. (2011). month of Sundays thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/month_of_sundays/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "month of Sundays thesaurus" https://smartdefine.org/month_of_sundays/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2011, month of Sundays thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/month_of_sundays/thesaurus/synonyms>. |
| MLA | Smart Define. "month of Sundays thesaurus" 24 May 2011. Web. 21 September 2026. <https://smartdefine.org/month_of_sundays/thesaurus/synonyms> |