| biennial(adjective, number, celebrate, birth, date) | |
| decennial(adjective, number, celebrate, birth, date) | |
| quatercentenary(noun, remember, celebration, age, date) | |
| centenary(noun, number, celebrate, celebrity, birth) | |
| bicentenary(noun, number, celebrate, celebrity, birth) | |
| beefday(noun, birth, date, day) | |
| birth day(expression, birth, date, day) | |
| birthing(noun, birth, date, day) | |
| natal(noun, birth, date, day) | |
| natality(noun, birth, date, day) | |
| nativity(noun, birth, date, day) | |
| anniversary of birth(expression, birth, date, day) | |
| anniversary of foundation(expression, event, origin, date) | |
| day of origin(expression, event, date, day) | |
| day of person's birth(expression, birth, date, day) | |
| day of thing's beginning(expression, origin, date, day) |
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| APA | Smart Define. (2016). birthday thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/birthday/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "birthday thesaurus" https://smartdefine.org/birthday/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, birthday thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/birthday/thesaurus/synonyms>. |
| MLA | Smart Define. "birthday thesaurus" 10 February 2016. Web. 25 September 2026. <https://smartdefine.org/birthday/thesaurus/synonyms> |