grown-up

The definition of grown-up is someone or something that is mature or intended for an adult.

(adjective)

An example of something that would be described as grown up is an R rated movie.

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See grown-up in Webster's New World College Dictionary

adjective

  1. that is an adult
  2. of, for, or like an adult

noun

an adult
also written grownup

See grown-up in American Heritage Dictionary 4

adjective
  1. Of, characteristic of, or intended for adults: grown-up movies; a grown-up discussion.
  2. Having or showing maturity in outlook, attitude, or appearance: a grown-up attitude toward work.

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