From Proto-Tai *ŋwɯːᴬ (“snake”). Cognate with Thai งู (nguu), Northern Thai ᨦᩪ, Lao ງູ (ngū), Tai Dam ꪉꪴ, Shan ငူး (ngúu), Tai Nüa ᥒᥧᥰ (ngü), Ahom 𑜂𑜥 (ṅū), Zhuang ngwz, Saek งั๊ว.
ᦇᦴ • (nguu) (Tai Tham spelling ᨦᩪ)