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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.

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Wealthy homeowners across the country are spending millions on amenities designed to draw their teenage and adult children back home.

From The Wall Street Journal ● Nov. 9, 2026

The “Ray” Oscar winner is also a father to two adult daughters, ages 32 and 18.

From Los Angeles Times ● Nov. 9, 2026

One extra step to take here because you have adult children is to be transparent with them that this is how you are managing things.

From MarketWatch ● Nov. 9, 2026

Lucy Knight, the Kensington and Chelsea council's lead member for adult social care and public health, said "no-one should be left worrying" about whether their care would still be there.

From BBC ● Nov. 8, 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

Mufti Adeel Zaman, the imam who conducted the ceremony, said the marriage had been between two consenting adults who appeared happy and that he did not consider it his responsibility to ask further questions.

From BBC ● Nov. 10, 2026

Ultimately, I’m not sure she has to appease “ungrateful adults who are behaving like demanding children,” as you put it.

From MarketWatch ● Nov. 9, 2026

Gallup found that 56% of Gen Z adults call themselves independent, up from 47% of millennials in 2012 and 40% of Gen Xers in 1992.

From The Wall Street Journal ● Nov. 9, 2026

However, if “the widow” is concerned about fairness, this approach might satisfy that concern while appeasing ungrateful adults who are behaving like demanding children.

From MarketWatch ● Nov. 9, 2026

Then I told the girls to go outside so the adults could talk.

From "Reaching for the Moon" by Katherine Johnson


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