Definition of grown–up
1 : not childish or immature : adult
2 : of, for, or characteristic of adults insisted on wearing grown–up clothes
Read the Latest from M-W
First Known Use of grown–up
1633
First Known Use of grown–up
1813
GROWN–UP Defined for English Language Learners
grown-up
play
adjective
Definition of grown–up for English Language Learners
-
: no longer young : fully grown
-
: suitable for adults
-
: like an adult
grown-up
noun
Definition of grown–up for English Language Learners
-
: a person who is fully grown
GROWN–UP Defined for Kids
Learn More about grown–up
-
See words that rhyme with grown–up Spanish Central: Translation of grown–up
Seen and Heard
What made you want to look up grown–up? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!