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alert

adjectivenounverbcommon in dialogue

  • United Kingdom//əˈlɜːt//
  • United States//əˈlɝt//

Attentive; awake; on guard.

adjective

  1. 1

    Attentive; awake; on guard.

  2. 2

    obsoletebrisk; nimble; moving with celerity.

    I saw an alert young fellow that cocked his hat upon a friend of his who entered just at the same time with myself

Etymology

From French alerte (“alert”), from the phrase à l'erte (“on the watch”), from Italian all'erta (“to the height”), from erta (“lookout, tower”).

noun

  1. 1

    An alarm.

  2. 2

    A notification of higher importance than an advisory.

  3. 3

    A state of readiness for potential combat.

    an airborne alert; ground alert

  4. 4

    Synonym of bell (“bell character”).

verb

  1. 1

    To give warning to.

Etymology

Formed within English by conversion, from alert (adjective). Compare French alerter.

Forms

plural
alerts
comparative
more alert
superlative
most alert
past tense
alerted
past participle
alerted
present participle
alerting
third person singular
alerts
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).