Slang dictionary

nighty night

(interjection)Casual

A sweet, sing-songy way of saying good night — most often used with children, partners, or close friends.

In a sentence

  • Nighty night, sweetheart — sleep tight.
  • "Nighty night," she whispered as she turned off the light.

Also known as

good nightsweet dreams

Where it’s used

everyday

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Related slang

nighty night — American slang definition + audio