vigilance

[vij-uh-luhns]
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Origin of vigilance

1560–70; alteration (-ance for -ancy) of obsolete vigilancy < Latin vigilantia; see vigilant, -ancy
Related formshy·per·vig·i·lance, nounnon·vig·i·lance, nounpre·vig·i·lance, nounsu·per·vig·i·lance, noun

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for vigilance

vigilance

noun
  1. the fact, quality, or condition of being vigilant
  2. the abnormal state or condition of being unable to sleep
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 vigilance
n.

1560s, from French vigilance, from Latin vigilantia "wakefulness," from vigilia (see vigil).

Online Etymology Dictionary, © 2010 Douglas Harper