From Proto-Tai *ɗɤjᴬ (“good”). Cognate with Thai ดี (dii), Northern Thai ᨯᩦ (di), Lao ດີ (dī), Shan လီ (lǐi), Ahom 𑜓𑜣 (dī), 𑜃𑜣 (nī) or 𑜑𑜣 (hī), Bouyei ndil, Zhuang ndei.
ᦡᦲ • (ḋii)