Bye-bye Definition

bībī, bī-bī
interjection
Used to express farewell.
American Heritage

(informal, often childish) Goodbye.

Wiktionary
adverb
Away.
American Heritage
To bed; to sleep.
American Heritage
noun
Goodbye.
Webster's New World

(colloquial, often childish) A goodbye.

Wiktionary

(colloquial, often childish) Bedtime for a toddler, going to sleep, going to bed.

Wiktionary

Idioms, Phrasal Verbs Related to Bye-bye

Origin of Bye-bye

  • From bye, goodbye.

    From Wiktionary

  • Reduplication of bye

    From American Heritage Dictionary of the English Language, 5th Edition

Find Similar Words

Find similar words to bye-bye using the buttons below.

Words Starting With

Words Ending With

Unscrambles

bye-bye