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[interjection nahyt-nahyt, -nahyt; adverb nahyt-nahyt] /interjection ˈnaɪtˈnaɪt, -ˌnaɪt; adverb ˈnaɪtˌnaɪt/

Informal. good night.
go night-night, Baby Talk. to go to bed or to sleep.
sentence substitute
an informal word for good night

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


An amiable parting salutation at night (1896+)


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  • Night-owl

    noun, Informal. 1. a person who often stays up late at night; nighthawk. noun 1. (informal) a person who is or prefers to be up and about late at night n. “owl which flies at night,” 1590s; applied since 1846 (American English) to persons who are up or out late at night. Cf. night-hawk, also […]

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