Chapter 6: Impostors and heteroclites

In many languages, the construction of plats is complicated by the incidence of two phenomena: imposture and heteroclisis. Imposture is an ambiguity in the morphology of one or more of a lexeme's word forms that results in uncertainty about that lexeme's IC membership; heteroclisis is the property of lexemes that function as members of distinct ICs in different parts of their realized paradigms. As we show in this chapter, both impostor lexemes and heteroclite lexemes may have the effect of diminishing other lexemes' IC predictability and cell predictability.