vigilance

Alert watchfulness.

Wakefulness.

The state or character of being vigilant; watchfulness in discovering or guarding against danger, or in providing for safety; circumspection; caution.

Specifically, watchfulness during the hours of night.

In medicine, a form of insomnia.

A guard or watch.

The quality or state of being vigilant; forbearance of sleep; wakefulness.

Watchfulness in respect of danger; care; caution; circumspection.

Guard; watch.

a volunteer committee of citizens for the oversight and protection of any interest, esp. one organized for the summary suppression and punishment of crime, as when the processes of law appear inadequate.