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Word of the Day
Tuesday, March 25, 2014

Definitions for vigilant

  1. keenly watchful to detect danger; wary: a vigilant sentry.
  2. ever awake and alert; sleeplessly watchful.

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Citations for vigilant
She would have to remain vigilant: yes, vigilant against herself, vigilant against her own mind and the tricks it played! Stavros Stavros, The Sentimentalist, 2010
But no one ever dreams of being sober and vigilant at the right time, so the organization, like many larger such, is a broken reed. Hugh Stowell Scott, The Sowers, 1896
Origin of vigilant
Vigilant has been around in English since the 1400s. It comes from the Latin vigilāre meaning "to be watchful."