good day

American  

interjection

1. a conventional expression used at meeting or parting during the daytime.

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good day British  

1. a conventional expression of greeting or farewell used during the day

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good day Idioms  

1. Also,. Formal ways of saying “Hello” or “Goodbye.” For example, He began rather oddly by addressing the audience with “Good day,” or “Good afternoon, ladies,” said the sales clerk as we walked out. All these greetings represent an abbreviation of the now obsolete God give you a good day (afternoon, etc.), which dates from about 1200. Also see good night.

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Etymology

Origin of good day

Middle English word dating back to 1175–1225

Example Sentences

See Examples For:

good day

"Today is a good day for democracy, the rule of law, and the American people looking to exercise their Constitutional right to vote," the governor said in a statement.

From Barron's ● Sep. 15, 2026

“It’s a good day for the state of California.”

From The Wall Street Journal ● Sep. 10, 2026

“Today was a good day for Will,” Roberts said.

From Los Angeles Times ● Aug. 22, 2026

"It was a good day for Droitwich too," he said.

From BBC ● Aug. 11, 2026

“It was a good day to get you out of the camp.”

From "Prisoner B-3087" by Alan Gratz