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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.

It was part of a pattern of police harassment that he’d endured for much of his adult life, she said.

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

The first involved an adult male and two kits sourced from Scotland.

From BBC • Apr. 7, 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




Vocabulary lists containing adult