Umbugarla language

Umbugarla or Mbukarla is a possible Australian language isolate once spoken by three people in Arnhem Land, northern Australia as of 1981, and is now extinct.

Umbugarla was once considered a language isolate (together with Ngurmbur as a dialect), but Mark Harvey has made a case for it being part of a family of Darwin Region languages.

Ngurmbur and Bugurnidja are poorly attested extinct languages, which are joined with Umbugarla to form the Umbugarlic branch.

Tryon (2007) lists the following varieties of Umbugarla–Ngumbur:

However, nothing is known of Ngunbudj or Ngarduk, which were extinct by World War II.