Goodbye is a parting word, something you say to other people when you're leaving. You might say goodbye to all your favorite teachers on your last day of high school.

A goodbye means that someone's departing: you say goodbye to your parents when you go off to college, and you also say goodbye to guests when they leave after a visit. The original goodbye, dating from the 1570s, was godbwye, which was a contraction of the farewell phrase "God be with ye!"

Definitions of goodbye

n a farewell remark

adieu, adios, arrivederci, au revoir, auf wiedersehen, bye, bye-bye, cheerio, good day, good-by, good-bye, goodby, sayonara, so long
Type of:
farewell, word of farewell
an acknowledgment or expression of goodwill at parting

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