From Proto-Tai *k.rajᶜ (“illness; fever”). Cognate with Thai ไข้ (kâi), Northern Thai ᨡᩱ ᩶, Lao ໄຂ້ (khai), Shan ၶႆႈ (khāy), Ahom 𑜁𑜩 (khay).
ᦺᦃᧉ • (ẋay2)