A "strong rebuttal" means giving a powerful and convincing argument to counter or challenge someone's statement or claim.
Sentences with «strong rebuttal»
Worse, strong rebuttals of the nonsense that has slowed / prevented action for the last couple decades have been largely absent. (realclimate.org)
Harbaugh's got a pretty strong rebuttal to those rumors, as relayed Tuesday by a couple of seniors on Michigan's defense. (sbnation.com)
Having returned from four days devoted to professional development at the National Resume Writers Association's annual conference, I can tell you with absolute certainty that should those doubts ever resurface, I will have several strong rebuttals. (virginiafrancoresumes.com)