-something
A person whose age falls into a given decade.
[English something.]
Originally in American English (especially following a television series of the late 1980s called Thirtysomethings), and then more widely, this ending has been adopted to create nouns and adjectives that indicate a person whose age falls into a given decade: twentysomething, thirtysomething, fortysomething. These are usually written without a hyphen.
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