birthday
UK /ˈbɜːθ.deɪ/ · US /ˈbɝθˌdeɪ/ noun, verb
Forms birthdays birthdaying birthdayed birth-day birfday birthdaye
- noun The anniversary of the day on which someone is born. “When's your birthday? Mine's on April 1.”
- noun The anniversary of the day on which something is created.
- noun The date on which someone is born or something is created, more commonly called birthdate or date of birth.
- noun A birthday party. “I'd like to invite you all to my birthday.”
- verb (intransitive, informal) To celebrate one's birthday.
Synonyms
Etymology
From Middle English birthdai, birtheday, from Old English ġebyrddæġ (“birthday”), influenced by Old Norse burðr, equivalent to birth + day. Compare Saterland Frisian Gebuursdai (“birthday”), Dutch geboortedag (“birthday”), Low German Geboortsdag (“birthday”), German Geburtstag (“birthday”), Norwegian bursdag, gebursdag (“birthday”). Eclipsed non-native Middle English nativitee (“birth, nativity, birthday”), from Old French nativité, nativited, from Latin nātīvitas.
Webster’s 1913
- noun The day in which any person is born; day of origin or commencement.
- noun The day of the month in which a person was born, in whatever succeeding year it may recur; the anniversary of one's birth.
- adjective Of or pertaining to the day of birth, or its anniversary; as, birthday gifts or festivities.
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “birthday”, CC BY-SA 4.0. Details