Which word could be used to describe a misleading argument or reasoning?

The term that effectively describes a misleading argument or reasoning is "fallacious." In the context of logical reasoning and argumentation, fallacious refers to arguments that contain logical flaws or errors in reasoning. Such arguments may appear valid on the surface but ultimately fail to provide sound or true conclusions. This concept is crucial in critical thinking and analyzing arguments, as recognizing fallacies allows individuals to discern credible information from misleading claims.

The other words do not specifically relate to arguments or reasoning. Impeccable refers to something flawless or perfect, which contrasts with the idea of misleading. Facade typically describes a deceptive outward appearance, while chubby pertains to physical characteristics and lacks relevance in the context of reasoning or argumentation. Thus, fallacious is the appropriate choice as it directly conveys the idea of misleading logic or reasoning.