twentysomething meaning (informal): definition

twentysomething

noun

/ˈtwɛn.tiː.ˌsʌm.θɪŋ/

Etymology From twenty + -something.

Informal A person whose age is between twenty and twenty-nine years, inclusive; someone in their twenties.

This is the twentysomething generation, those 48 million young Americans ages 18 through 29 who fall between the famous baby boomers and the boomlet of children the baby boomers are producing.1990 July 16, David M. Gross, Sophfronia Scott, “Proceeding With Caution”, in TIME, archived from the original on 04 Mar 2025:
A 2025 phenomenon involving teenagers and masturbatory twentysomethings with limited education and experience given the authority to tell five-star generals, former presidents, cabinet secretaries, academics, and ambassadors how to do their jobs.2025 March 24, David Gardner, “‘You’ve Been Doged!’ Now Musk’s Goons Have Their Own Word”, in The Daily Beast, archived from the original on 28 Mar 2025:

adj

Etymology From twenty + -something.

Aged between twenty and thirty.

You may feel as inexperienced as a twentysomething woman just starting out, but it’s not too late to make changes.1993, Esther M. Berger with Connie Church Hasbun, “Introduction . . . Finances, Femininity, and Fear”, in Money Smart: Secrets Women Need to Know about Money Matters—from Saving to Planning to Investing, New York, N.Y.: Avon Books, published October 1994, →ISBN, page 25:
The members of The Dope Show are pretty normal looking twentysomething guys and gals with nothing to prove.2008 March 27, Deanna Uutela, “Sweet Dope”, in Ted Taylor, editor, Eugene Weekly, volume XXVII, number 13, Eugene, Ore.: What’s Happening Inc., →ISSN, →OCLC, page 32, column 4:

1 more example

Coristine is one of a team of teenage and twentysomething software engineers, apparently conscripted by Musk in his largely unchecked war against bureaucracy.2025 February 7, Josie Ensor, “Meet Elon Musk’s ‘baby-faced assassins’ leading Doge takeover”, in The Times, archived from the original on 30 Mar 2025:

num

Etymology From twenty + -something.

Between twenty and thirty.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.