Synonyms

birthday

American

[burth-dey] / ˈbɜrθˌdeɪ /

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 British

/ ˈbɜːθˌdeɪ /

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of birthday

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He invited them to travel around the world with him and celebrated Thanksgiving, Christmas and his own birthday with them.

From Los Angeles Times

Beardsley presented Carrick with a cake on his 13th birthday at St James' Park while the youngster was invited to play in the prestigious Milk Cup youth tournament a year early.

From BBC

In September, payments firm Block Inc. XYZ 1.18%increase; green up pointing triangle gathered 8,000 of its employees from around the globe to California for an extravaganza celebrating the company’s 16th birthday.

From The Wall Street Journal

And so for the last few Christmases and birthdays, Erin has been getting hundreds of photos of him developed.

From The Wall Street Journal

I got ATO for my birthday last month, but I don’t know what I’m doing.

From Literature

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023