What word encapsulates the act of inflicting something harmful?

The term "wreak" accurately captures the act of inflicting something harmful. It is often associated with causing damage, destruction, or suffering, embodying the idea of unleashing negative consequences. In various contexts, including literature and conversation, to "wreak havoc" or "wreak vengeance" effectively conveys the severity and forcefulness of such actions.

In contrast, the alternatives provided suggest different meanings that do not align with the intent of inflicting harm. "Protect" signifies safeguarding or defending against harm, while "reinforce" conveys strengthening or supporting something positively. "Enhance" refers to improving or increasing the quality of something in a beneficial way. These words evoke positivity or defense rather than the act of causing harm, which solidifies why "wreak" is the most appropriate choice.