To impair means to:

To impair means to diminish the quality, strength, or effectiveness of something. In this context, it refers to causing some form of injury or damage, which aligns perfectly with the concept of injuring. When something is impaired, it cannot function as effectively as it should, indicating a level of harm or degradation. Understanding this definition helps clarify how impairing aspects such as judgment, ability, or physical capabilities affects overall performance, which can be particularly relevant in discussions about driving safety and other high-stakes environments. Options like enhance, strengthen, and support convey an opposite meaning, as they refer to improving or bolstering, which is not consistent with the idea of impairment.