From Proto-Tai *ʑaɰᶜ (“to commission”). Cognate with Thai ใช้ (chái), Northern Thai ᨩᩲ᩶, Lü ᦺᦋᧉ (tsay2), Shan ၸႂ်ႉ (tsâ̰ue), Ahom 𑜋𑜨𑜧 (chow).
ໃຊ້ • (sai) (abstract noun ການໃຊ້)