vigilant


From The Collaborative International Dictionary of English v.0.48:

Vigilant \Vig"i*lant\, a. [L. vigilans, -antis, p. pr. of
   vigilare to watch, fr. vigil awake: cf. F. vigilant. See
   Vigil.]
   Attentive to discover and avoid danger, or to provide for
   safety; wakeful; watchful; circumspect; wary. "Be sober, be
   vigilant." --1 Pet. v. 8.
   [1913 Webster]

         Sirs, take your places, and be vigilant. --Shak.
   [1913 Webster]
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