From Proto-Tai *wɯətᴰ (“wing”). Cognate with Bouyei fead.
fwed (Sawndip forms 𭯗 or 𬆿 or 羽 or 𰭡 or ⿰发厾 or 撥 or 勿 or ⿺支勿 or ⿺毛若 or 𣭜, 1957–1982 spelling fɯed)