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