confutation (n.)

"act of disproving or proving to be false," mid-15c., from Latin confutationem (nominative confutatio), noun of action from past-participle stem of confutare "repress, check; disprove, restrain, silence," from assimilated form of com-, here probably an intensive prefix (see con-), + *futare "to beat," which is perhaps from PIE root *bhau- "to strike." Confutation of the person in logic is argument ad hominem.

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