sityaaw [sit/*yaaw]
Stem with modifying proclitic composed of: *yaaw  
transitive verb. exchange; switch around; return; reciprocate
../mp3s/s/sityaaw-dl-hb-01.mp3 Dm silm g̱ooyu g̱alm wa'at'nm da sityaawda guda'ats nah gyiigu. I'm going to go back to the store and exchange the coat I bought.
../mp3s/s/sityawksa-dl-hb-01.mp3 Dm sityawksu na p'a̱xsu, nah 'lii g̱atsdas Tammy aks. I'm going to change my pants, Tammy spilled water on them.

Related entries: ksi sityaawt  trade | lusityaawt  trade | Derivative sitya'msk  change clothes | Idiom sityaawda g̱oot  change one's mind | Stem with modifying proclitic sityaawksa̱  rinse out

Bibliographic sources: Dunn, Practical Dictionary entry: 1721. Dunn, Practical Dictionary entry 1788.
Source: Draft Dictionary entry.