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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.

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

A cinema has banned under-16s from screenings after 19:00 BST unless they are accompanied by a "responsible adult".

From BBC • May 21, 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

It would also continue to block new adult applications, a cutback imposed last year.

From Los Angeles Times • May 20, 2026

There are ten fifteen.and-unders in total on the Ranch; the six of us girls share this room, and the four boys have a room closer to where the adult dorms are.

From "The Wrong Way Home" by Kate O’Shaughnessy




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