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

Kaepernick’s vigilance did, however, force us to consider the painful and problematic relationship between law enforcement and people of color. — Mike Jones, New York Times, 15 Sep. 2026

Finally, consider that the movement to protect kids from these harms is just beginning and will require constant evolution and vigilance to adapt to emerging threats. — Susan Morrisey, STAT, 15 Sep. 2026

Try balancing playdates and school drop-offs with security measures and constant vigilance. — Ct Jones, Rolling Stone, 15 Sep. 2026

For Steven Ingber, CEO of the Jewish Federation of Detroit, the assault remains a powerful reminder of the need for vigilance as families prepare to gather. — Ariella Noveck, FOXNews.com, 10 Sep. 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