ROGET THESAURUS
redargue
Confutation
VB
confute, refute, disprove, parry, negative, controvert, rebut, confound, disconfirm,
redargue, expose, show the fallacy of, defeat, demolish, break, overthrow, overturn scatter to the winds, explode, invalidate, silence, put to silence, reduce to silence, clinch an argument, clinch a question, give one a setdown, stop the mouth, shut up, have, have on the hip, not leave a leg to stand on, cut the ground from under one's feet, be confuted, fail, expose one's weak point, show one's weak point, counter evidence.