Definition
[+/-sonorant] is the major class that refers to sounds that do not have a constriction in the vocal tract during articulation, and thus do not have a buildup of pressure behind a constriction. the [sonorant] class is used to make a distinction between sonorants and obstruents. The segments that are considered to be [+sonorant] are vowels, glides, liquids, and nasals. All other sounds are [-sonorant] (Zsiga 2013, p. 258).
Examples
- Hul’q’umi’num’
- The following phonemes enclosed in blue are possible members of the [+sonorant] natural class in Hul’q’umi’num’. It should be noted that all vowels are also [+sonorant].

- Skwxwú7mesh
- The following phonemes enclosed in blue are possible members of the [+sonorant] natural class in Skwxwú7mesh.

- Secwepemctsín
- The following phonemes enclosed in blue are possible members of the [+sonorant] natural class in Secwepemctsín. It should be noted that all vowels are also [+sonorant].
