From Proto-Tai *priːᴬ (“spirit”). Cognate with Northern Thai ᨹᩦ, Lao ຜີ (phī), Lü ᦕᦲ (ṗhii), Tai Dam ꪠꪲ, Shan ၽီ (phǐi), Ahom 𑜇𑜣 (phī).
ᥚᥤᥴ (phí) (1963 orthography ᥚᥤ́)