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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.

"I really do think it's a problem. I'll have to live with that anxiety until my daughter becomes an adult."

From BBC • May 23, 2026

In part, this archetype, as Fiedler dubs it, reflects our literature’s recurrent failure to deal honestly with adult heterosexual love and its attendant responsibilities.

From The Wall Street Journal • May 22, 2026

The “KPop Demon Hunters” collaboration with McDonald’s, released in late March, featured two “dueling” adult meals that each came with a collectible card.

From Los Angeles Times • May 22, 2026

Among all the amino acids tested, cysteine produced the strongest regenerative effect on both stem cells and progenitor cells, which eventually mature into adult intestinal cells.

From Science Daily • May 21, 2026

“I haven’t included this one in a book yet,” the voice of adult Tyran says.

From "The Manifestor Prophecy" by Angie Thomas




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