Abstract. The issue of formalizing skepticism relations between argumentation semantics has been considered only recently in the literature. In this paper, we contribute to this kind of analysis by providing a systematic comparison of a significant set of literature semantics (namely grounded, complete, preferred, stable, semi-stable, ideal, prudent, and CF2 semantics) using both a weak and a strong skepticism relation. Key words: Argumentation semantics, Skepticism