Lexical categories Witsuwitʼen lexical categories include
nouns,
verbs,
adjectives, and
postpositions. Directional terms are considered to be a lexical group in Witsuwitʼen found throughout lexical categories.
Nouns Witsuwitʼen nouns are only inflected for
possession, and no case marking exists in Witsuwitʼen. Prefixes which are furthest away from the lexical stem display more variability. The Witsuwitʼen verb consists of a lexical root and an aspectual, tense, or modal affix (most often a suffix). All Witsuwitʼen verbs carry tense and subject inflection; there is no Witsuwitʼen equivalent to the English
infinitive.
Postpositions Postpositional object marking is demonstrated in the examples below.
Postpositions can stand by themselves, as in the example '
3s was playing with it,' or attach to the verbal complex. {{interlinear|indent=3
Directional terms Complex directional systems and directional terms have been described in
Ahtna,
Slavey,
Kaska,
Koyukon,
Tsek'ene, and Witsuwitʼen. Directional terms are composed of a directional root, prefixes which describe distance, and suffixes which indicate motion or rest. Two object prefixes [] and [y-]: {{interlinear|indent=3 {{interlinear|indent=3 1st and 2nd person subjects include 1SG, 2SG, and 2PL. 3rd person subjects can be expressed as unspecified (human), indefinite, or 4th person (referred to as the
obviative in Algonquian languages).
Voice / Valence Athabaskan languages like Babine-Witstuwitʼen make use of two main argument transferring morphemes known as classifiers. However, the term
classifier is recognized among Athabaskanists as a misnomer;
voice and
valence markers are more appropriate descriptors. Each lexical entry of Witsuwitʼen verbs features a lexicalized voice/valence marker fused with the verb stem, though this element sometimes appears as zero. The classifiers [ɬ] and [d] regulate transitivity: [ɬ] increases transitivity by creating causatives and the [d] classifier lowers transitivity to create middle voice. The valence marker [l] is more complex in nature, indicating a combination of [ɬ] and [d] where a middle is built upon a causative. ==Words and phrases==