köken: Inherited from Middle French guy, from Old French guy, from Latin viscum, influenced by Frankish *wīhsila (in both cases cognate to French guigne (“heart cherry, wild cherry”))
köken: From tak (“branch”); the origin of the element mare- is disputed, but is generally related to mare (“nightmare, witch”). Compare, for example, Norwegian Nynorsk marekvist.
köken: First attested in the Dong'ui bogam (東醫寶鑑 / 동의보감), 1613, as Early Modern Korean 겨으살이 (Yale: kyeu-sal-i). From 겨울 (gyeoul, “winter”) + 살- (sal-, “to live”) + -이 (-i).
köken: Perhaps from Proto-Indo-European *weyḱs-, possibly a European borrowing for a tree similar to the mistletoe. Compare also Ancient Greek ἰξός (ixós, “mistletoe, birdlime”), Proto-Slavic *višьňa, Proto-Germanic *wīhsilō, and probably Italian visciola (“sour cherry”), the last likely a Germanic borrowing. Traditionally associated with vīrus, although this is unlikely. Also compare Proto-Germanic…