Primitive postpositions

Primitive (or simple) postpositions are monomorphemic and mostly monosyllabic.

The large majority of postpositions are primitive and monosyllabic and lack an etymology.

Complex postpositions

A complex postposition is one consisting of more than one morpheme. It may be a combination of primitive postpositions or a denominal postposition.

All complex postpositions are concrete postpositions; their postpositional phrases are adjuncts rather than complements.