We usually assume that the linear order of language is driven by the grammatical categories. This assumption is widely held in both syntax (e.g. SOV, Det N Adj) and morphology (e.g. N-Num-Case, V-Tns). However ordering may also deviate from this assumption, for example where words or morphemes have item-specific orderings that are not determined by grammatical category. Another type of deviation is found in variable ordering, i.e. xy ~ yx with no change of meaning, which may be driven by pragmatics and phonology, rather than grammatical category. In this talk I will examine the extent to which inflectional morphology conforms to category-based ordering. I will also discuss ways in which linear morphological ordering may be similar or different to syntax.