good night

¹

interjection

1. an expression of farewell used in parting at nighttime or when going to sleep.

good-night

²

[ good-nahyt ]

noun

1. a farewell or leave-taking:

   He said his good-nights before leaving the party.

good night

sentence substitute

1. a conventional expression of farewell, or, rarely, of greeting, used in the late afternoon, the evening, or at night, esp when departing to bed

Word History and Origins

Origin of good night¹

Middle English word dating back to 1325–75

Example Sentences

This Sleep Story gives fans a unique way to experience the characters while getting a good night’s sleep.

From Salon

Kamala Harris Why: Because I got a good night of sleep last night and ate a wholesome dinner and am not currently staring into a black hole of despair.

From Slate

Like Virginia, these states are expected to go to Harris—but if the race seems tight, it could be a sign of a good night for Trump overall.

From Slate

Owen’s Blanche, battered by life, looked in desperate need of a good night’s sleep.

From Los Angeles Times

He said he wanted to give the fans a good night on Wednesday - and did so as he masterminded a 5-2 win over Leicester in the Carabao Cup.

From BBC