Zygmunt Frajzyngier’s main interests and areas in which he published books and scholarly papers include: foundations of syntax and semantics in cross-linguistic perspective; typological explanations in grammar; grammaticalization; Chadic and Afroasiatic linguistics, and descriptive grammars and dictionaries of Chadic languages. His early work was on Awutu, a Kwa language. He is the author, co-author and editor of 25 books, one lexical data base, and over 120 papers. His work has been supported by the NSF, NEH, Fulbright Grant, University of Colorado, ANR (France), and Humboldt Foundation. He is a recipient of the Humboldt Research Prize, Pays de la Loire Chaire Régional de Chercheur Étranger, International Chair in Empirical Foundations of Linguistics,. He has held visiting professorships and guest scholarships at the University of Nice, Centre National de Recherches Scientifique, Nice Max Planck Institute for Evolutionary Anthropology, Leipzig, Center for Linguistic Typology, La Trobe University, and the City University of Hong Kong.