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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From French vigilant or its source, Latin vigilans, present participle of vigilare (“stay awake”), from vigil (“awake”). Doublet of vigilante, from Spanish. Displaced Old English wacor.
argus-eyed, open-eyed, wakeful
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Classic usage
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