boomer
n. countable B2 Upper Intermediate US //ˈbumɝ// UK //bˈuːmɐ// boomer
n. a person born between 1946 and 1964. People often use this word to describe someone who has old-fashioned ideas or doesn't understand modern technology.
n. a person born during the post-World War II baby boom, specifically between 1946 and 1964. Often used pejoratively in modern slang to dismiss older individuals perceived as out of touch.
My uncle is a typical boomer who still prints out his emails.
The term boomer has evolved from a demographic label into a common internet insult for anyone with conservative or outdated views.
Usage
Often used in the dismissive phrase 'OK boomer' to ignore the opinions of older people.
Last updated May 7, 2026