bye-bye

[ interjection bahy-bahy; noun, adverb bahy-bahy ]
See synonyms for bye-bye on Thesaurus.com
interjection
  1. Informal. goodbye.

noun
  1. Baby Talk. sleep.

Idioms about bye-bye

  1. go bye-bye, Baby Talk.

    • to leave; depart; go out.

    • to go to sleep; go to bed.

Origin of bye-bye

1
1700–10; apparently originally 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. 2024