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Definition of "grownup" []

  • An adult. (noun)
  • Having reached maturity; adult (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • Suitable for or characteristic of an adult (adjective)
  • An adult (noun)

www.Collinsdictionary.com (c) HarperCollins Publishers Ltd 2016

Use "grownup" in a sentence
  • "John Edwards today said that after watching his rivals slug it out last night, he's proud to represent what he's calling the grownup wing of the Democratic Party."
  • "He has to work with a grownup, which is Nancy Pelosi."
  • "We're missing the so-called grownup, the adult in the Democratic Party, so expect these two to go at each other tonight -- Kitty."