First ed. published Paihia, N.Z.C.M. Society, 1844 as A dictionary of the New Zealand language / William Williams. Previous edition 1957. Reprinted 1975 and 1985 (Govt. Printer), 1988 and 1989 (GP Books), and 1991 and 1992 (GP Publications), and also 1995, 1997, 2000 and 2001.

"Fourth edition of Māori-English, English-Māori dictionary"--BIM.

This dictionary and index comprises a selection of modern and everyday language that will be extremely useful for learners of the Maori language. It has a broader scope than traditional dictionaries, so as well as the words one would usually expect in a dictionary, it also includes; encyclopaedic entries designed to provide key information, explanations of key concepts central to Maori culture, comprehensive explanations for grammatical items, with examples of usage, idioms and colloquialisms with their meanings and examples.