Etymology

From 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 (“farewell”), German Fahrwol, Fahrwohl, East Frisian forwal, Dutch vaarwel (“farewell (sadly)”), Danish farvel (“farewell”), Norwegian farvel (“farewell”), Swedish farväl (“farewell”), Faroese farvæl (“goodbye”), Icelandic far vel (“farewell”). The extensive list of cognates suggests a postulated ultimate Proto-Germanic phrase of origin, possibly something akin to far wela.