From Proto-Tai *ɣwaːjᴬ (“water buffalo”). Cognate with Thai ควาย (kwaai), Lao ຄວາຍ (khuāi), Lü ᦩᦻ (xwaay), Tai Dam ꪁꪫꪱꪥ, Tai Nüa ᥑᥣᥭᥰ (xäay), Shan ၵႂၢႆး (kwáai), Ahom 𑜁𑜨𑜩 (khoy) or 𑜁𑜩 (khay), Zhuang vaiz, Saek ว๊าย.
ᨤ᩠ᩅᩣ᩠ᨿ • (transliteration needed) (classifier ᨲ᩠ᩅᩫ)