View synonyms for

birthday

[ burth-dey ]

Phonetic (Standard)IPA

noun

the anniversary of a birth.
the day of a person's birth.
a day marking or commemorating the origin, founding, or beginning of something.
the festivities or celebration marking such a day or anniversary.

birthday

/ ˈ��ɜːθˌ��ɪ /

noun

1. an anniversary of the day of one's birth
2. ( as modifier )
  birthday present
the day on which a person was born
any anniversary

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Word History and Origins

Origin of birthday¹

Middle English word dating back to 1350–1400; birth, day

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Example Sentences

Examples have not been reviewed.

The youngest participant in the 2025 London Marathon will celebrate her 18th birthday on race day.

From

The boy’s condition forced him to undergo dialysis for two weeks — including on his 10th birthday, the complaint said.

From

This week saw pilgrims flock to Rome to pay tribute to the late Pope Francis, the US threaten to pull out of Ukraine peace talks, and Prince Louis celebrate his seventh birthday.

From

“So thank you, son, for being the reason I’ll never forget to get your mom a card when I’m grabbing a birthday card for you!”

From

Need suggestions for where to host a big birthday party on a restaurant patio?

From

birth date Birthday honours

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