Like the other Algonquian languages, Blackfoot is considered to be a polysynthetic language due to its large morpheme inventory and word internal complexity. A majority of Blackfoot morphemes have a one to one correspondence between form and meaning, a defining feature of agglutinative languages. However, Blackfoot does display some fusional characteristics as there are morphemes that are polysemous. Both noun and verb stems cannot be used bare but must be inflected. Due to its morphological complexity, Blackfoot has a flexible word order.