How do you use vigilant?

The term "vigilant" refers to being watchful and alert, especially in noticing potential dangers or problems. For example, you might say, "The security guard remained vigilant throughout the night, ensuring the safety of the premises." In everyday situations, one could use it to describe staying attentive while driving or monitoring a child's safety in a busy park. Overall, it emphasizes the importance of being proactive and aware in various contexts.