4
biennial(adjective, number, celebrate, birth, date)
4
decennial(adjective, number, celebrate, birth, date)
4
quatercentenary(noun, remember, celebration, age, date)
3
centenary(noun, number, celebrate, celebrity, birth)
3
bicentenary(noun, number, celebrate, celebrity, birth)
3
beefday(noun, birth, date, day)
3
birth day(expression, birth, date, day)
3
birthing(noun, birth, date, day)
3
natal(noun, birth, date, day)
3
natality(noun, birth, date, day)
3
nativity(noun, birth, date, day)
1
anniversary of birth(expression, birth, date, day)
1
anniversary of foundation(expression, event, origin, date)
1
day of origin(expression, event, date, day)
1
day of person's birth(expression, birth, date, day)
1
day of thing's beginning(expression, origin, date, day)
<12>
10 years ago|23k views|share |citing 
APASmart Define. (2016). birthday thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/birthday/thesaurus/synonyms
ChicagoSmart Define. 2016. "birthday thesaurus" https://smartdefine.org/birthday/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, birthday thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/birthday/thesaurus/synonyms>.
MLASmart Define. "birthday thesaurus" 10 February 2016. Web. 25 September 2026. <https://smartdefine.org/birthday/thesaurus/synonyms>