Origin of vigilance
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the fact, quality, or condition of being vigilant
- 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 hypervigilance
1560s, from French vigilance, from Latin vigilantia "wakefulness," from vigilia (see vigil).
Online Etymology Dictionary, © 2010 Douglas Harper