Dictionary
2 ENTRIES FOUND:

1grown–up

adjective \ˈgrōn-ˌəp\

: no longer young : fully grown

: suitable for adults

: like an adult

Full Definition of GROWN-UP

1
:  not childish or immature :  adult
2
:  of, for, or characteristic of adults <insisted on wearing grown–up clothes>

First Known Use of GROWN-UP

1633

Related to GROWN-UP

2grown–up

noun

: a person who is fully grown

Full Definition of GROWN-UP

:  adult

First Known Use of GROWN-UP

1813

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