Inherited from Proto-Tai *ɡiəwꟲ. Cognate with Lao ຄ້ຽວ (khiāu), Shan ၵဵဝ်ႉ (kâ̰eo), Tai Dam ꪵꪁ꫁ꪫ, Ahom 𑜀𑜢𑜈𑜫 (kiw), Zuojiang Zhuang keux.
geux