From Proto-Southwestern Tai *sɛːnᴬ¹ (“one hundred thousand”) (Jonsson, 1991). Cognate with Thai แสน (sɛ̌ɛn), Northern Thai ᩈᩯ᩠ᨶ, Lü ᦶᦉᧃ (ṡaen), Shan သႅၼ် (sěn), Tai Nüa ᥔᥦᥢᥴ (sáen), Phake ꩬိၺ် (siñ), Ahom 𑜏𑜢𑜐𑜫 (siñ).
ແສນ • (sǣn)