General fallaciesLogic Formal Fallacies Propositional logic Affirming a disjunct Denying a conjunct Affirming the consequent Denying the antecedent Syllogistic fallacies Affirmative conclusion from a negative premise Negative conclusion from affirmative premises Fallacy of exclusive premises Fallacies of distribution Illicit process Undistributed middle Four-term fallacy Ambiguous middle Other formal fallacies Circular reasoning Existential fallacy Informal Fallacies (Valid) Inferences Rhetoric fallacies