From Proto-Tai *dwuːŋꟲ (“belly”). Cognate with Thai ท้อง (tɔ́ɔng), Lao ທ້ອງ (thǭng), Northern Thai ᨴ᩶ᩬᨦ, Lü ᦑᦸᧂᧉ (toang²), Shan တွင်ႉ (tâ̰ung), Zhuang dungx.
ꪕ꫁ꪮꪉ (ꞌtọng)