A person over 20 (sometimes, way over 40) who refuses to go into adulthood, thus wearing clothes, having attitudes and maintaining tastes from their teen years, or adopting today's teens tendencies. A little more mature than a kidult, but not much.
Being and adult is boring. I'd rather go on as a teendult.
by Teendult May 31, 2008
Get the teendult mug.
1) When you have the responsibilities of an adult but you are still technically a teenager.

2) When you’re 18 and 19 and considered an adult and also a teenager.
1) I was a teendult when I applied for college in my junior year of high school.

2) It’s weird being a teendult, I’m 19 years old. I’m a teenager AND an adult at the same time.
by Kenise February 4, 2018
Get the Teendult mug.