adjective vig·i·lant \ˈvi-jə-lənt\

: carefully noticing problems or signs of danger

Full Definition of VIGILANT

:  alertly watchful especially to avoid danger
vig·i·lant·ly adverb

Examples of VIGILANT

  1. When traveling through the city, tourists should be extra vigilant.
  2. They were vigilant about protecting their children.
  3. We remain vigilant against theft.
  4. Over the years, as tension between pitchers and hit batsmen heightened to the point that hitters began rushing the mound, umpires have had to become far more vigilant about keeping the game from degenerating into a dogfight. —Buzz Bissinger, Sports Illustrated, 21 Mar. 2005

Origin of VIGILANT

Middle English (Scots), from Latin vigilant-, vigilans, from present participle of vigilare to keep watch, stay awake, from vigil awake
First Known Use: 15th century


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