Vigilance/ˈvɪdʒɪləns/ Definition 1 of 3Pro Tip 1/3Alert and Aware Vigilance involves being alert and aware, especially to prevent accidents or harm. Her vigilance prevented the toddler from wandering off. Pro Tip 2/3Continuous Checking Being vigilant means regularly checking for risks, not just once. His vigilance in monitoring the boat's path ensured safe sailing. Pro Tip 3/3Proactive Stance Vigilance conveys a proactive approach to anticipating problems before they occur. Vigilance against cyber threats keeps our data safe.