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Definitions

adult

[uh-duhlt, ad-uhlt] / əˈdʌlt, ˈæd ʌlt /
ADJECTIVE
being mature, fully grown
Synonyms
Antonyms


NOUN
a mature, fully grown person
Synonyms
STRONGEST
STRONG
grownup
WEAK
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"This sense of teamwork is something that you don't usually get, like, as an adult," Koch added.

From Barron's • Apr. 9, 2026

The analysis revealed previously unknown patterns of connectivity, including direct links between cell types that had not been known to connect in the adult brain.

From Science Daily • Apr. 7, 2026

“The West Wing” actor Busfield has three adult children from two previous marriages and is the stepfather to Gilbert’s two adult sons from her two previous marriages.

From Los Angeles Times • Apr. 6, 2026

Family films, particularly those with adult nostalgia, are proving the best way to draw audiences to theaters.

From The Wall Street Journal • Apr. 5, 2026

For what child does not like being treated kindly by an adult?

From "The Unseen Guest" by Maryrose Wood