• synonyms


  1. a mature, fully grown person; adult.
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Origin of grownup

First recorded in 1805–15; noun use of verb phrase grow up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for grownups

developed, full-fledged, full-grown, grown, mature, miss, gentleman, lady, man, mister, woman, Mr., Mrs., mam

Examples from the Web for grownups

Contemporary Examples of grownups

Historical Examples of grownups

  • Had she not been punished and now were not all the grownups sorry for her and petting her?

  • On the lawns were putting and bowling contests for grownups.

  • I am to help the children, yes, and the grownups, of a small city—to enjoy life.

    Gypsy Flight

    Roy J. Snell

  • We grownups and the children are very much alike in that respect.

    ABC of Gardening

    Eben Eugene Rexford

  • It is odd about Grownups--how mistaken they can be, how sadly mistaken.

    Half-Past Seven Stories

    Robert Gordon Anderson