» For the Indian cooking utensil, see Kadai. The Tai-Kadai languages, also known as Kadai or Kradai, are a tonal language family found in Southeast Asia and southern China. External relations The Kadai languages were formerly considered to be part of the Sino-Tibetan family, but are now classified as an independent family. It is sometimes suggested that they're related to the Austronesian language family, in a family called "Austro-Tai", or even part of a larger Austric superfamily. However, pr… (More on Tai-kadai)