From Proto-Tai *vaːᶜ (“sky; weather”). Cognate with Thai ฟ้า (fáa), Lao ຟ້າ (fā), Lü ᦝᦱᧉ (faa2), Shan ၽႃႉ (phâ̰a) or ၾႃႉ (fâ̰a), Ahom 𑜇𑜠 (pha), 𑜇𑜡 (phaa), 𑜇𑜨𑜠 (phoa), 𑜇𑜨𑜡 (phoaa) or 𑜇𑜞𑜠 (phra), Zhuang fax.
ᨼ᩶ᩣ (faa)