Farewell is defined as goodbye.(interjection)
An example of farewell is what a person might say when his friend embarks on a trip across the country.
See farewell in Webster's New World College Dictionary
Origin: fare (imper.) + well
See farewell in American Heritage Dictionary 4
Origin: Middle English fare wel
Origin: : imperative of faren, to fare; see fare
Origin: + wel, well; see well2.
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