confute (v.)

"prove to be false or invalid, overthrow by evidence or stronger argument," 1520s, from French confuter, from Latin 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." Related: Confuted; confuting.