The term "weak" refers to a lack of strength, power, or effectiveness. It can describe physical attributes, such as a person who is unable to lift heavy objects, or it can refer to emotional or mental states, indicating vulnerability or fragility. In various contexts, being weak can also imply a deficiency in performance or capability. In a broader sense, "weak" can apply to systems, arguments, or structures that lack robustness or resilience. For example, a weak argument may fail to convince others due to insufficient evidence, while a weak structure may be prone to collapse under stress.