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Definition adult in British English

adult adjective

adjective
/ˈædʌlt/
1

your adult life is the whole period of your life after you have become an adult

Example

She was born in Vietnam but has spent most of her adult life in the US.

Synonyms and related words
1.1

involving people who are adults

Example

59% of the adult population

Example

a book enjoyed by young and adult readers

Synonyms and related words
2

adult magazines, films, and books are intended for adults and not children because they are about sex

Synonyms and related words
3

sensible or serious

Example

Can you try and be a little more adult about this?

Synonyms and related words
Example

an adult cat

Synonyms and related words
Definition adult in British English