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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.

Prosecutor Michael Robertson asked Belov: "You were the adult in this situation, you could have just walked away couldn't you?"

From BBC • Jun. 11, 2026

People she met included a widow estranged from her adult children over financial woes, who stored piles of their belongings at their mother's home.

From Barron's • Jun. 11, 2026

People who consider themselves prepared should guarantee that their adult children know where their important end-of-life files are, Zuckerman said — but that’s likely not the case.

From MarketWatch • Jun. 10, 2026

The most effective strategy involved sterilizing about 22% of adult female koalas each year in areas with the highest population densities rather than applying the approach across the entire region.

From Science Daily • Jun. 8, 2026

“Not only am I uncomfortable at the idea of traveling without an adult, but I don’t know how to operate a train. Nic and JP most likely don’t either.”

From "The Manifestor Prophecy" by Angie Thomas




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