A defective word is defined by paradigm as incomplete compared with the major class it belongs to. Defectiveness signifies the unwanted intrusion of morphological idiosyncrasy into syntax. Although this phenomenon has been a constant subject of studies, it has been ill incorporated into the theories of language. This present volume brings together scholars from various theoretical schools for an overdue typological view of defectiveness. It concentrates on some samples of idiosyncratic gaps which are assumed as indicative of the phenomenon of (...) defectiveness. Before delving into the specified topics of each chapter, this introductory chapter presents a typology of defective paradigms. It discusses terms used to describe defectiveness in synchronotic terms, and the possible diachrony of defective paradigms. (shrink)