From Proto-Tai *hwa:jᴬ. Cognate with Thai ฝาย (fǎai), Northern Thai ᨺᩣ᩠ᨿ, Lao ຝາຍ (fāi), Lü ᦚᦻ (ḟaay), Shan ၽၢႆ (phǎai) or ၾၢႆ (fǎai), Zhuang fai.
waail