Комментарии:Viet. t- is rather strange here, so Viet. tiê`u may be quite independent from the Chinese word. Another possible explanation of the Viet. word would be a contraction of the Chinese euphemism for 'urine, urinating' 小便 (MC sjéw-bjèn), see 小. For *n cf. Xiamen zio6, Chaozhou zie6 (reflecting an unattested variant MC *ńèw, OC *news), Fuzhou nieu6, Jianou niau6.