grown-up

adjective
\ ˈgrōn-ˌəp How to pronounce grown-up (audio) \

Definition of grown-up

 (Entry 1 of 2)

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

grown-up

noun

Definition of grown-up (Entry 2 of 2)

Synonyms & Antonyms for grown-up

Synonyms: Adjective

Synonyms: Noun

Antonyms: Adjective

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First Known Use of grown-up

Adjective

1633, in the meaning defined at sense 1

Noun

1813, in the meaning defined above

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Time Traveler for grown-up

Time Traveler

The first known use of grown-up was in 1633

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Cite this Entry

“Grown-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/grown-up. Accessed 20 Jan. 2021.

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More Definitions for grown-up

grown-up

adjective
How to pronounce grown-up (audio)

English Language Learners Definition of grown-up

 (Entry 1 of 2)

: no longer young : fully grown
: suitable for adults
: like an adult

grown-up

noun

English Language Learners Definition of grown-up (Entry 2 of 2)

somewhat informal : a person who is fully grown

grown-up

adjective
\ ˈgrōn-ˌəp \

Kids Definition of grown-up

 (Entry 1 of 2)

grown-up

noun

Kids Definition of grown-up (Entry 2 of 2)

: an adult person

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