The number of Aboriginal languages that existed in Australia prior to colonization is estimated to be about 600. Some include Walpiri, Pijantjatjara, Luritja and Arrernte. In those days most Aborigines were multilingual and likely to speak a half dozen languages as well as their own. Tragically, in the last two hundred years Australia has suffered the largest and most rapid loss of languages known to history. Currently there are only 200 different Aboriginal languages across Australia, with only about 20 in constant use.