Prepositions primarily denote direction or position. They also function as case-like markers for peripheral arguments of the verb.
| su | position at, on, in; location or time of verbal action |
| du | direction to, into, onto; beneficiary of verbal action or recipient of an object |
| pesi | direction from, out of; demoted subject of a transitive verb |
| nene | direction through, via; instrument used in verbal action 'using'; companion of subject in verbal action 'with' |
Prepositions attach to a determiner plus classifier or a pronominal clitic or pronoun. The determiner a is elided after a preposition. Other preposition plus determiner combinations have fused, such as neŋŋo(v) from nene + ŋo(v) or neno(v) from nene + vov.