Meaning

noun an acknowledgment or expression of goodwill at parting

noun the act of departing politely

originFrom Middle English farewel, from fare wel! (and the variants with the personal pronoun "fare ye well" and "fare you well" used in the Renaissance), an imperative expression, possibly further derived from Old English *far wel!, equivalent to fare (“to fare, travel, journey”) + well. Compare Scots farewele, fairweill (“farewell”), Saterland Frisian Foarwäil (“farewell”), West Frisian farwol…

Etymology from Wiktionary, CC BY-SA 3.0