Ever since the rise of the so-called analytic school in 20th century philosophy, philosophical analysis has often been considered to be synonymous with conceptual analysis. However, criticism has also been levelled at the conceptual analysis procedures, which undermined confidence in the merits of conceptual analysis. As far as the clarification of concepts is concerned, explication is therefore sometimes proposed as an alternative means. Combining historical and systematic perspectives, this volume collects new work on analytical and explicatory methods within 20th century philosophy. The contributions explore how clarificatory and reformatory methods of engaging with concepts have been construed and utilized by such different authors as Aristotle, Russell, Wittgenstein, Carnap or Mackie, marking out underappreciated congruencies and reevaluating historical disputes. They explore the role of analysis in metaphysics as well as metaethics and examine how methodological accounts relate to underlying ideas about concepts.