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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 shifts the bill from aging parents to their adult children by impacting these caregivers’ own capacity for wealth building,” Forden said.

From MarketWatch • Apr. 14, 2026

With so much spending on healthcare, older boomers—and their adult kids—expect better results and a less confusing, complicated and fragmented system.

From The Wall Street Journal • Apr. 13, 2026

The average adult produces more than a liter of urine and over 100 grams of poo each day.

From Science Daily • Apr. 13, 2026

Young adult adaptations are at the core of the platform’s broader efforts to champion diversity in storytelling, said Peter Friedlander, Prime Video’s head of global TV.

From Los Angeles Times • Apr. 13, 2026

Never in his whole life had an adult believed him so willingly, so quickly.

From "The Way to Rio Luna" by Zoraida Cordova




Vocabulary lists containing adult