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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.

And yet, a few Red Hot bangers manage to endlessly caravan in and out of lives because they’re in constant rotation on Jack FM and other adult contemporary radio stations: “Give It Away.”

From Salon • Apr. 4, 2026

My adult children received a legacy from a relative they loved, and the overall taxes will be lower.

From The Wall Street Journal • Apr. 3, 2026

He also has two adult offspring: Daughter Bo is from a previous relationship with Amanda Rushing; he shares son Spencir, 27, with his first wife.

From Los Angeles Times • Apr. 3, 2026

They found him not guilty in relation to the second adult dog, Beauty, on the basis that she was owned by his girlfriend.

From BBC • Mar. 31, 2026

According to the adult spirits who cared for them, Leila and Frankie were happily growing up in Summerland just as they would have at home: “Your children live for you here and love you deeply.”

From "American Spirits" by Barb Rosenstock