Thesaurus.com
Dictionary.com
Showing results for adult.
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.

Traditional custodial accounts are available at most brokerages and let an adult, usually a parent, manage an account on behalf of a child of any age.

From The Wall Street Journal • Apr. 14, 2026

Dorset Wildlife Trust introduced an adult pair of beavers into an enclosed site in west Dorset in February 2021, as part of a scientific study.

From BBC • Apr. 13, 2026

She has an adult daughter and a 14-year-old daughter still at home.

From MarketWatch • 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

The mudbean house was mostly empty at this time of day, as adult witches were busy at work and younger witches were still at school.

From "Witchlings" by Claribel A. Ortega




Vocabulary lists containing adult