A defeater of a belief is evidence that this belief is false.[1] Defeaters are of particular interest to epistemology because they affect whether a belief is justified. An important distinction is between undercutting and rebutting defeaters. Undercutting defeaters remove evidential support for a belief while rebutting defeaters provide evidential support for the opposite thesis of the belief. Defeaters play a central role in modern developments of defeasible reasoning.
- ^ McCain, Kevin; Stapleford, Scott; Steup, Matthias (21 October 2021). Epistemic Dilemmas: New Arguments, New Angles. Routledge. p. 111. ISBN 978-1-000-46851-9.
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