Inherited from Middle English wisenen, from Old English wisnian, weosnian, from Proto-West Germanic *wisnōn, from Proto-Germanic *wisnōną, from Proto-Germanic *wesaną (“to consume”). Cognate with Icelandic visna, Gothic 𐍆𐍂𐌰𐍅𐌹𐍃𐌰𐌽 (frawisan, “to squander through feasting”).