bed or bedtime: originally a nursery word, now facetious
Origin of beddy-bye
from bed + -y + bye(-bye)beddy bye
bed·dy-bye 
This baby has gone beddy bye.
The definition of beddy bye is an expression that means going to sleep or going to bed that is usually used with kids.
An example of beddy bye is putting your child down to sleep in his crib for the night.
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beddy-bye
Webster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Beddy-bye. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/beddy-bye
beddy-bye
Informal
interjection
Used to say good night to someone, especially to a child, who is going to bed.
noun
The act of going to bed or of putting a child to bed: It's time for beddy-bye.
THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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MLA Style
"Beddy-bye." YourDictionary. LoveToKnow. www.yourdictionary.com/beddy-bye.
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Beddy-bye. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/beddy-bye
Noun
(plural beddy-byes)
- (idiomatic, baby-talk, childish) Bedtime for a toddler, going to sleep, going to bed.
English Wiktionary. Available under CC-BY-SA license.
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Cite this page
MLA Style
"Beddy-bye." YourDictionary. LoveToKnow. www.yourdictionary.com/beddy-bye.
APA Style
Beddy-bye. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/beddy-bye
