Dissent is a word we come across frequently these days. We read it in the newspapers, use it in discussions with friends and colleagues—perhaps even engage in the activity ourselves. And yet for all of its popularity, few of us, if pressed, would be able to pin down exactly what dissent is. It is this question I wish to explore in this paper. In particular my aim will be to provide a conceptual analysis of the idea of dissent such that (...) we may more cleanly distinguish it from other related forms of disagreement. I use a recent book written on the topic by Ronald Collins and David Skover as an argumentative foil. (shrink)