Like many northern languages, it has complex systems of both prefixation and suffixation to nominals and verbs. Prefixation provides information about nominal classification (4 classes), mood, and pronominal cross-reference (Subjects, Objects, and Indirect Objects). Suffixation provides information about case, tense, and aspect. As in many languages, there is a clear distinction between productive and unproductive morphology. Gaagudju differs from most Australian languages in that a considerable amount of its morphology is unproductive, showing complex and irregular allomorphic variation.
Gaagudju is like most Australian languages in that it may be described as a free word order language. However, word order is not totally free and strictly ordered phrasal compounding structures are significant (e.g. in the formation of denominal verbs).