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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.

"The teenagers said they had been pressured by the adult," another source close to the case added.

From Barron's • Apr. 1, 2026

"It assumes," says Diss, "that parents will bridge the monetary gap. It fails to factor in an effective way of exiting unemployment and entering the world of work as a self-sufficient adult."

From BBC • Mar. 30, 2026

Even though they were considered small compared to other sauropods, adult Uberabatitans may have reached lengths of up to 26 meters, making them the largest dinosaurs known from Brazil.

From Science Daily • Mar. 30, 2026

In 1855 Maryland opened the House of Refuge, becoming the first Southern state to establish a facility to remove children from adult jails and prisons.

From Slate • Mar. 30, 2026

Never in his whole life had an adult believed him so willingly, so quickly.

From "The Way to Rio Luna" by Zoraida Cordova