Madurese is a major regional language of Indonesia, with some 14 million speakers, mainly on the island of Madura and adjacent parts of Java, making it the fourth largest language of Indonesia after Indonesian, Javanese, and Sundanese. There is no existing comprehensive descriptive grammar of the language, with existing studies being either sketches of the whole grammar, or detailed descriptions of phonology and morphology or some particular topics within these components of the grammar. There is no competing work that provides the breadth and depth of coverage of this grammar, in particular (