He was a young man on the verge of becoming an adult.
Synonyms and examplesgrow upWhat do you want to be when you grow up?
matureSome adolescents mature earlier than others.
Go to the thesaurus article about these synonyms and antonyms ofto become an adult.
See alsoadult
grown-up
biginformal
grown up
full-grown
grown
mature studentUK
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An adultis a person who is no longer a child. You can also talk aboutadult activities, behaviour, etc.When you grow up, youbecome an adult.