good night

¹ American  

interjection

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

---

good-night ² American  

[good-nahyt] / ˌgʊdˈnaɪt /

noun

1. a farewell or leave-taking.

   He said his good-nights before leaving the party.

---

good night British  

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

---

good night Idioms  

1. Expression of farewell used when parting at night or when going to sleep, as in He stood at the door, saying good night to each of the departing guests , or Mother came to tuck the children in and kiss them good night . [Late 1300s]

2. Exclamation of surprise or irritation, as in Good night, Joe!—You can't mean what you said , or Good night, Anne—it's time you learned how to throw a ball . [Late 1800s]

---

Etymology

Origin of good night

Middle English word dating back to 1325–75

Example Sentences

In a strongly-worded Instagram post on Friday, Labrinth criticised the show and Columbia Records, which releases the soundtrack, adding: "I'm out. Thank you and good night."

From BBC

“Sorry! We didn’t mean to bother you. Just having a quick sister chat. Have a good night!”

From Literature

How to stop feeling bad about your sleep and get a good night’s rest.

From The Wall Street Journal

Before he returned to his wife and children, David told Mother to ignore the nighttime noises and get a good night’s sleep.

From Literature

“I want to get a good night’s sleep. It should be dry enough to work in the fields tomorrow.”

From Literature