grownup

American  

[grohn-uhp] / ˈgroʊnˌʌp /

noun

1. a mature, fully grown person; adult.

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Etymology

Origin of grownup

First recorded in 1805–15; noun use of verb phrase grow up

Example Sentences

What could be more gratifying than feeling superior to a couple of grownups?

From The Wall Street Journal

It’s an open-air shopping and dining center that has a large lawn where the kids can play and the grownups can grab a drink from Lil’ Simmzy’s.

From Los Angeles Times

“No grownups!” the boys exult, upon realizing they are on a deserted island after the plane evacuating them from Britain is shot down.

From The Wall Street Journal

It’s weird, but I don’t think I’ve ever had a grownup hold out their hand for me to shake.

From Literature

Mr. Reiner later recalled that Norman Lear was the first grownup to say he was funny, when he was around 7 or 8.

From The Wall Street Journal