vigilance.

Continued attention aimed at detecting danger, change, or relevant signals.

Use it for

Words that belong together

• maintain vigilance
• heightened vigilance

On the page

Vigilance declined during the final hour of monitoring.

Usage notes

Primary category: psychology / human behavior. Forms: Usually uncountable; no ordinary plural in this sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: character, interpretation. Commonness: moderately common.