vigilance

[ vij-uh-luhns ]
/ ˈvɪdʒ ə ləns /

noun

state or quality of being vigilant; watchfulness: Vigilance is required in the event of treachery.
Pathology. insomnia.

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Origin of vigilance

1560–70; alteration (-ance for -ancy) of obsolete vigilancy<Latin vigilantia;see vigilant, -ancy

OTHER WORDS FROM vigilance

hy·per·vig·i·lance, nounnon·vig·i·lance, nounpre·vig·i·lance, nounsu·per·vig·i·lance, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for vigilance

vigilance
/ (ˈvɪdʒɪləns) /

noun

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