0 always being careful to notice things, especially possible danger: --
1 being very careful to notice things, esp. signs of danger: --
But they must be equally vigilant against crime.
The patient's life (in fact, a slow, inevitable, unconscious death) was ended deliberately ahead of time to reduce the vigilant family's suffering.
Second, the copy-editor could have been more vigilant.
Music educators need to be vigilant in addressing this problem.
Likewise, the past spoke to the present of the need to be vigilant about abject poverty, welfare injustices, and basic human needs.
A highly anxious and vigilant animal may, in many natural settings, be at a greater survival advantage compared with its more relaxed littermates.
Analysts should be vigilant as this situation provides a fertile ground for the involuntary distortion (or manipulation) of results.
As a consequence, the guard was doubled and clergy and justices were asked to be especially vigilant.
