9 Grammatical Pitfalls


[vij-uh-luh nt] /ˈvɪdʒ ə lənt/
keenly watchful to detect danger; wary:
a vigilant sentry.
ever awake and alert; sleeplessly watchful.
Origin of vigilant
1470-80; < Latin vigilant- (stem of vigilāns), present participle of vigilāre to be watchful. See vigil, -ant
Related forms
vigilantly, adverb
vigilantness, noun
hypervigilant, adjective
hypervigilantly, adverb
hypervigilantness, noun
nonvigilant, adjective
nonvigilantly, adverb
nonvigilantness, noun
previgilant, adjective
previgilantly, adverb
supervigilant, adjective
supervigilantly, adverb
unvigilant, adjective
unvigilantly, adverb
Can be confused
vigilant, vigilante.
2. wide-awake, sleepless. See alert.
1. careless. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for vigilantly
  • Students vigilantly avoided red and were strongly attracted to blue.
  • Most people aren't inveterate skeptics vigilantly testing each anecdote to make sure it is representative of an overall pattern.
  • Now, residents vigilantly protect their unique traditions from too much outside encroachment.
  • The border between theft and borrowing is also vigilantly patrolled by scholars.
  • Travelers in these areas should bring antimalarial medication and vigilantly use an insect repellent spray.
  • But while the government vigilantly patrols our physical borders, it is doing precious little to control our electronic ones.
  • Global enforcement of minimum standards of living will have to be vigilantly pursued to mitigate corporate exploitation.
  • We must vigilantly patrol our coasts and airspace until further notice.
  • Wall says that tent camps are being vigilantly tracked by humanitarian aid agencies.
  • We will vigilantly monitor our preparedness and capability and continuously adjust to the changing threats to our community.
British Dictionary definitions for vigilantly


keenly alert to or heedful of trouble or danger, as while others are sleeping or unsuspicious
Derived Forms
vigilantly, adverb
vigilantness, noun
Word Origin
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
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Word Origin and History for vigilantly



late 15c., from Latin vigilantia "wakefulness," from vigilia (see vigil). Related: Vigilantly.

Online Etymology Dictionary, © 2010 Douglas Harper
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