from The American Heritage® Dictionary of the English Language, 4th Edition

  • interj. Used to express farewell.
  • adv. Informal Away.
  • adv. Informal To bed; to sleep: "[Live Senate television is] a great way to go bye-bye. Pretty soon you're asleep” ( William Proxmire).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • interj. Goodbye.
  • n. A goodbye.
  • n. bedtime for a toddler, going to sleep, going to bed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a farewell remark


Reduplication of bye2.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From bye, goodbye. (Wiktionary)



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