Updated to reflect recent developments in the field, Lexical-Functional Syntax, 2nd Edition, enhances its stature as the definitive text for Lexical Functional Grammar (LFG) with a primary focus on syntactic structure. Representing the most accessible, empirically-motivated treatment of the mathematical architecture of LFG available, the authors continue to offer a synthesis of major theoretical developments related to lexical-functional syntax and cover the wide range of cross-linguistic syntactic phenomena to which it has been applied. Updates include new sections on agreement and concord, predication, along with morphology that supports or suppresses argument structure roles, as well as many new problem sets-including several based on languages not featured in the 1st edition. Helpful feedback from readers is also incorporated into this new edition to enhance clarity. Offering illuminating insights into the syntactic framework of LFG, Lexical-Functional Syntax, 2nd Edition, is an essential resource for all aspects of this important field.