[interjection nahyt-nahyt, -nahyt; adverb nahyt-nahyt]


Informal. good night.


    go night-night, Baby Talk. to go to bed or to sleep.

Origin of night-night

First recorded in 1895–1900 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for night-night

Historical Examples of night-night

  • And ''night-night' and 'daddy' were two-year-old language to Jim.

  • Night-night, echoed Ted, as he wiggled his fingers in a funny fashion at Trouble.

  • "Just a little peep at dainty Miss Mission, to say night-night," he smiled, unfastening the catch on the chronometer case.

    Gold Out of Celebes

    Aylward Edward Dingle

British Dictionary definitions for night-night


sentence substitute

an informal word for good night
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for night-night

nursery talk, "good-night," 1896; form nighty-night is attested from 1876.

Online Etymology Dictionary, © 2010 Douglas Harper