Definition of thirtysomething
: having an age of 30 to 39 years old <thirtysomething parents>; also : of or relating to people in their thirties <Just the usual thirtysomething decor—Persian rug, book-shelves, abstract paintings, glass coffee table, … and a few exotic trinkets picked up on foreign junkets. — Marly Swick>
First Known Use of thirtysomething
Seen and Heard
What made you want to look up thirtysomething? Please tell us where you read or heard it (including the quote, if possible).