From Proto-Tai *wɤjᴬ (“fire”). Cognate with Ahom 𑜇𑜩 (phay),Thai ไฟ (fai), Northern Thai ᨼᩱ (fai), Lao ໄຟ (fai), Lü ᦺᦝ (fay), Shan ၽႆး (phái) or ၾႆး (fái), Tai Nüa ᥜᥭᥰ (fäy), Zhuang feiz, Bouyei fix, Saek วี๊.
ꪼꪡ (ꞌpháy)