noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The year, month, and day of someone's birth; a date of birth.

Synonyms

All synonyms

birthdaydate of birthdate of birth

Example

More examples

"Tom doesn't know his birthdate."

Etymology

From birth + date.

Related phrases

date of birth

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.