From Proto-Tai *n̩.loŋᴬ (“to descend”). Cognate with Thai ลง (long), Northern Thai ᩃᩫ᩠ᨦ, Lao ລົງ (long), Lü ᦟᦳᧂ (lung), Shan လူင်း (lúung), Ahom 𑜎𑜤𑜂𑜫 (lung), Zhuang roengz.
ꪶꪩꪉ (transliteration needed)