Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “good night”

good night

exclamation  /ˌɡʊd ˈnɑɪt/
used for saying goodbye to someone in the evening , or to someone before you go to bed or to sleep
(Definition of good night exclamation from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definitions of “good night” in other dictionaries

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More