What does impugn mean in the context of an argument?

The term "impugn" in the context of an argument specifically means to challenge or call into question the truth or validity of something. When someone impugns an argument, they are essentially arguing against its credibility or truthfulness, suggesting that it may be flawed or incorrect. This is a critical aspect of discourse and debate, where one might present counterarguments or evidence that undermine the original claims being made. Understanding this term helps in grasping the nuances of argumentative interactions, where questioning the validity of a statement is a common practice in seeking truth and understanding.