- keenly watchful to detect danger; wary: a vigilant sentry.
- ever awake and alert; sleeplessly watchful.
Origin of vigilant
SynonymsSee more synonyms for on Thesaurus.com
2. See alert.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for vigilantly
We have to vigilantly protect it, so we can continue to live in a free society.Hip-Hop Conservative Rep. Trey Radel Charged With Cocaine Possession
November 20, 2013
LIBRA With Saturn in Libra, squaring Mars, you must be vigilantly disciplined, while focusing less on results.What the Stars Predict for Your Week
Starsky + Cox
August 20, 2011
He became most vigilantly attentive to the two men on whom he waited.The Island Mystery
George A. Birmingham
She gathered ironwood and catclaw while he watched her vigilantly.Crooked Trails and Straight
William MacLeod Raine
How vigilantly, how patiently, did we watch the Texas plot from its commencement!
The great bore will be to watch him so vigilantly as to prevent his marrying.Blue-Stocking Hall, Vol. 1 (of 3)
William Pitt Scargill
The waiter watched me vigilantly from the door, as I went out.Basil
- keenly alert to or heedful of trouble or danger, as while others are sleeping or unsuspicious
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
Word Origin and History for vigilantly
late 15c., from Latin vigilantia "wakefulness," from vigilia (see vigil). Related: Vigilantly.
Online Etymology Dictionary, © 2010 Douglas Harper