A Descriptive Vocabulary of the Language in Common Use Amongst the [Aboriginals ...] of Western Australia is a book by George Fletcher Moore.

First published in 1842, it represents one of the earliest attempts to record the languages used by the Aboriginal peoples of Western Australia.

The book is a compilation by Moore based on the works of Robert Lyon, Francis Armstrong, Charles Symmons, the Bussell family and George Grey, as well as his own observations.

In 1884 it was republished as part of Moore's Diary of Ten Years Eventful Life of an Early Settler in Western Australia and also A Descriptive Vocabulary of the Language of the [Aboriginals ...].

The compilation of regional variants in the Nyungar language is cited in Serventy and Whittell Birds of Western Australia and subsequent ornithological literature, although his own observations of bird-life remained unpublished until the 1884 edition of Moore's diary.