vigilance

noun

vig·​i·​lance ˈvi-jə-lən(t)s 

: the quality or state of being vigilant

Synonyms of vigilance

• watchfulness
• watch
• alertness

Examples of vigilance in a Sentence

eternal vigilance is the price of freedom

Recent Examples on the Web

Such preventive measures recognize the need for continuing vigilance and an upgrade of system safeguards. — The Christian Science Monitor, Christian Science Monitor, 20 July 2026

Saggar said vigilance is key as health officials continue probing. — Terry Collins, USA Today, 15 July 2026

In summary, when facing the threat of lightning, preparedness and vigilance are your best allies. — Bay Area Weather Report, Mercury News, 14 July 2026

When people understand the stakes and see peers celebrated for vigilance, the habit forms itself. — Expert Panel®, Forbes.com, 2 July 2026

Word History

First Known Use

1533, in the meaning defined above

Phrases Containing vigilance

• hyper-vigilance
• vigilance committee

Kids Definition

vigilance

noun

vig·​i·​lance ˈvij-ə-lən(t)s 

: the quality or state of being vigilant

Medical Definition

vigilance

noun

vig·​i·​lance ˈvij-ə-lən(t)s 

: the quality or state of being wakeful and alert : degree of wakefulness or responsiveness to stimuli

vigilant

-lənt 

adjective