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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.

Photos showed one of the seized Madagascar cockroaches was almost big enough to completely cover the palm of an adult hand.

From Barron's • Jun. 5, 2026

Parents told us they are spending money to help their adult children with child care, rent, down payments for homes and vacations.

From The Wall Street Journal • Jun. 4, 2026

Alma White appeared at Stormont's Education Committee with her son Caleb; she was one of a number of women who spoke to MLAs about the transition from school to adult care in Northern Ireland.

From BBC • Jun. 3, 2026

In kids and adult vintage alike, mint condition is highly valued.

From Los Angeles Times • Jun. 3, 2026

“The ones back there are children’s and young adult books. Fiction, nonfiction, novels and poetry, comics and graphic novels. Anything that I think you folks might enjoy.”

From "Clairboyance" by Kristiana Kahakauwila




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