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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.

Every adult in the UK has a personal allowance of £12,570 on which they don't pay any income tax.

From BBC • Apr. 11, 2026

Unlike adult incontinence products, baby diapers are not regulated as medical devices under the Federal Drug Administration.

From Los Angeles Times • Apr. 10, 2026

Sklar’s two adult children, appropriately enough, hate him, but it’s unclear whether he hated them first.

From The Wall Street Journal • Apr. 9, 2026

The severity of Emma’s teenage plan is analyzed against the kind person she’s proven herself to be as an adult.

From Salon • Apr. 9, 2026

I tell Alex we should go, but he hyperventilates at the idea of going anywhere without an adult and says he’d rather get caught by the Guardians.

From "The Manifestor Prophecy" by Angie Thomas




Vocabulary lists containing adult