Main Entry: vig·i·lant

Pronunciation: \ˈvi-jə-lənt\

Function: adjective

Etymology: Middle English (Scots), from Latin vigilant-, vigilans, from present participle of vigilare to keep watch, stay awake, from vigil awake

Date: 15th century

: alertly watchful especially to avoid danger

synonyms see watchful

— vig·i·lant·ly adverb