night-night
Americaninterjection
idioms
Etymology
Origin of night-night
First recorded in 1895–1900
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
By day, the twins were racing go-karts, and when the sun set, it was night-night time in the family’s 25-foot Thor Delano RV.
From The Wall Street Journal ● Dec. 28, 2025
It takes about a year to get what Roth calls the “perfect clunk and tinkle” — the Goldilocks zone between rock rebellion and night-night calm.
From Washington Post ● Mar. 30, 2017
Another started calling nursing go night-night, and only did it when her 2-year-old was going to bed.
From Slate ● Jul. 18, 2016
And ever since I’ve started looking at the science, I’ve become only more convinced that the earlier you say night-night, the better.
From Slate ● May 10, 2016
Normally, a pouncing hellhound is a terrifying sight, but next to the drakon, Mrs. O’Leary looked like a child’s night-night dolL Her claws raked harmlessly off the drakoris scales.
From "The Last Olympian" by Rick Riordan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
