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Date: 1400-1500
Language: Latin
Origin: , present participle of vigilare 'to stay awake, keep watch', from vigil; VIGIL

vigilant

adjective
     
vig‧i‧lant
giving careful attention to what is happening, so that you will notice any danger or illegal activity:
Please remain vigilant at all times and report anything suspicious.
vigilantly adverb

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