Linguistically, Nooksack is most closely related to the Squamish, shíshálh and Halkomelem languages, which are all spoken in nearby parts of British Columbia, Canada.

[2] In the 1970s, the linguist Brent Galloway worked closely with the last remaining native speaker, Sindick Jimmy, to compile a dictionary of the Nooksack language.

His book, Nooksack Place Names: Geography, Culture, and Language, was published in 2011.

[7] As of 2020, one fluent speaker remained, a Nooksack tribal member who has been part of the Lhéchelesem Teacher Training Language Immersion Project.

In addition, the diacritic "ː" indicates that the preceding sound is long (e.g. oː, aː).