Definition of good day Good day

We found 3 definitions of good day from 2 different sources.

What does good day mean?

Noun
good day - a farewell remark; "they said their good-byes"
		adieu, adios, arrivederci, auf wiedersehen, au revoir, bye, bye-bye, cheerio, good-by, goodby, good-bye, goodbye, sayonara, so long

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good day
A parting statement; used when one or more people in a situation, dialogue or location are leaving, while others remain.
good day
Salutation being used in the daytime.