rebutter, rebutment, counterrebuttal, refutation, refutal, refutandum, counterstatement, reopposition, rebuffing, counteranswer, more...

confirmation, agreement, acceptance, endorsement

counterargument, refutation, denial, contradiction, disproof, dispute, opposition, challenge, more...

effective, detailed, direct, point, strong, lengthy, sharp, final, vigorous, angry, convincing

counter point,   counter claim,   accusation response,   counter points,   stronger argument,   written defense,   counter thought,   counter arguement,   convincing answer,   counter response