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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.

Apple unveiled new child accounts and a comprehensive redesign of its parental controls settings that can more easily be set to block adult websites and only allow age-appropriate media.

From The Wall Street Journal • Jun. 8, 2026

These are families in which grandparents, other adult family members or close family friends are raising children, with no parents in the home.

From MarketWatch • Jun. 8, 2026

“Why not let them get hands-on experience? Why just have them sit and watch?” said Rory Johnson, the child development instructor at the adult school.

From Los Angeles Times • Jun. 8, 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

For the record, this is the only time I’d ever call an adult by their first name.

From "The Manifestor Prophecy" by Angie Thomas




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