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bye-bye

[interjection bahy-bahy; noun, adverb bahy-bahy]
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interjection
  1. Informal. goodbye.
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noun
  1. Baby Talk. sleep.
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Idioms
  1. go bye-bye, Baby Talk.
    1. to leave; depart; go out.
    2. to go to sleep; go to bed.
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Origin of bye-bye

1700–10; apparently orig. nursery phrase used to lull a child to sleep, later construed as reduplicative form of bye, short for goodbye
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bye-byes

Historical Examples

  • Upstairs, the little girl devoted a few minutes to instructing her dolly in the art of going off nicely to bye-byes.

    Princess Mary's Gift Book

    Various

British Dictionary definitions for bye-byes

bye-byes

noun
  1. (functioning as singular) an informal word, used esp to children, for sleep go to bye-byes
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012