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

Guard; watch.

the process of paying close and continuous attention

the ability to sustain concentration and to inhibit inaccurate responses during a repetitive task

Vigilance, a third person shooter developed by Tsunami, was released in 1998. It came under fire after its release for its lack of mid-level saving ability, awkward control scheme, and massive swap file. The project took over 2 years and $2 million to create.

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