From Proto-Tai *soːŋᴬ, from Middle Chinese 雙 (MC sraewng, “two”). Cognate with Thai สอง (sɔ̌ɔng), Northern Thai ᩈᩬᨦ, Lao ສອງ (sǭng), Lü ᦉᦸᧂ (ṡoang), Tai Dam ꪎꪮꪉ, Shan သွင် (sǎung), Ahom 𑜏𑜨𑜂𑜫 (soṅ), Bouyei soongl, Zhuang song.
ᥔᥩᥒᥴ (sóang) (1963 orthography ᥔᥩᥒ́)