Definition: Someone who's an adult — at least chronologically — but behaves like a kid.
Sample usage: "He's a typical kadult — has pancakes for supper and plays games all day. Basically, a seventh-grader who can buy cigarettes."
Popularity: Who needs this word when we already have "millennials"? (Just kidding.)
Interested in other words we've dissected? See more at startribune.com/word.