This collection provides an overview of present-day research on copulative clauses and copulative verbs. They center on the classification of copulative clauses, the various meanings and the diachronic development of copulative verbs, and quasi-copulative constructions in German and their equivalents in English, Hungarian, German sign language, Alemmanic dialects, Romance languages, and old Indo-Germanic languages. The detailed analyses produce insights into the realization potentials listed for copulative clauses in one-language grammars.