IPA: /ˈθɜːrtiˌsʌmθɪŋ/
KK: /ˈθɜrtiˌsʌmθɪŋ/
Referring to someone who is between the ages of 30 and 39.
Many thirtysomethings are starting families and building their careers.
A person who is between the ages of thirty and thirty-nine years old.
Many thirtysomethings are starting families and building their careers.
Thirtysomething is formed from "thirty" (from Old English "þritig", meaning three times ten) and "something" (from Old English "sum", meaning some or a certain amount). The term refers to a person who is in their thirties, indicating an age range that is more than thirty but less than forty.
Think of 'thirty' as three times ten, and 'something' as a certain amount — together, they describe someone who is in their thirties.
No commonly confused words.