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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.

Coyotes and other canids serve as the primary hosts for adult tapeworms.

From Science Daily • Jun. 11, 2026

Eight existing prisons have been tasked with preparing special sections for children, where they will be kept separate from adult inmates.

From Barron's • Jun. 11, 2026

Though Anthony was 17 at the time of the murder on 2 April 2025, under Texas law he was able to be charged as an adult.

From BBC • Jun. 10, 2026

Some beneficiaries, such as adult children, may not realize they have to empty an inherited IRA in 10 years from the date of death.

From MarketWatch • Jun. 10, 2026

If Child X grows up believing that it's okay to be so terrible to me, Child X is going to become a completely unbearable adult.

From "The School for Whatnots" by Margaret Peterson Haddix




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