vigilant

[ vij-uh-luhnt ]
/ ˈvɪdʒ ə lənt /

adjective

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

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Origin of vigilant

1470–80; < Latin vigilant- (stem of vigilāns), present participle of vigilāre to be watchful. See vigil, -ant

synonym study for vigilant

2. See alert.

OTHER WORDS FROM vigilant

WORDS THAT MAY BE CONFUSED WITH vigilant

vigilant vigilante
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for vigilantly

British Dictionary definitions for vigilantly

vigilant
/ (ˈvɪdʒɪlənt) /

adjective

keenly alert to or heedful of trouble or danger, as while others are sleeping or unsuspicious

Derived forms of vigilant

vigilantly, adverbvigilantness, noun

Word Origin for vigilant

C15: from Latin vigilāns keeping awake, from vigilāre to be watchful; see vigil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012