The term "must" indicates a strong obligation or necessity to perform a specific action. It is often used to express rules, laws, or requirements that individuals are expected to follow. For example, in a workplace, employees must adhere to safety regulations to ensure a safe environment. In everyday life, "must" can also refer to personal responsibilities, such as completing homework or paying bills on time. This word emphasizes the importance of fulfilling these duties, as failing to do so may lead to negative consequences. Overall, "must" signifies actions that are essential and non-negotiable.