- fully aware and attentive; wide-awake; keen: an alert mind.
- swift; agile; nimble.
- an attitude of vigilance, readiness, or caution, as before an expected attack.
- a warning or alarm of an impending military attack, a storm, etc.: We'd just boarded the bus when the alert sounded.
- the period during which such a warning or alarm is in effect.
- to warn (troops, ships, etc.) to prepare for action.
- to warn of an impending raid, attack, storm, etc.: The radio alerted coastal residents to prepare for the hurricane.
- to advise or warn; cause to be on guard: to alert gardeners to the dangers of some pesticides.
- on the alert, on guard against danger; in readiness; vigilant: The state police are on the alert for an escaped convict believed to be in the area.
Origin of alert
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for alerting
On July 8, a summons was sent to Zhang alerting her to the lawsuit, and on July 11, Nan Shi lost her job.Female Yahoo Exec Accused of Sex Abuse Fires Back
July 18, 2014
Few would dare to publicly rage against the government, as Gulnara has, for fear of alerting the security services.Gulnara Karimova’s Tweets Hint at Uzbek Power Struggle
November 22, 2013
The next day an email was waiting for Gambill from the honor system, alerting her that she may have broken its code.Expelled for Speaking Out About Rape?
February 28, 2013
But “with Buster alerting at the rear alley upslope, then that is certainly a possible grave site.”Can This Dog Solve the Black Dahlia Homicide?
February 3, 2013
He tried to escape once, climbing a boundary wall, his cries of "help" alerting sleeping guards, who then beat him up.Perry Has a Point About the Marines Video vs. the Daniel Pearl Video
Asra Q. Nomani
January 19, 2012
Instead of crippling the nation, they succeeded only in alerting it.The Last Gentleman
But why were they searching for him, alerting the natives in an effort to scoop him up?The Time Traders
Here the song acquires the additional functions of alerting the female to danger and threatening the trespasser.
If he did strike, the warning teams would perform their brief mission, alerting the active, working members of the defense groups.Final Weapon
Everett B. Cole
Alerting the coyotes, he dispatched them ahead; and the three started on, the Mongol girl between the two Apaches.The Defiant Agents
Andre Alice Norton
- vigilantly attentivealert to the problems
- brisk, nimble, or lively
- an alarm or warning, esp a siren warning of an air raid
- the period during which such a warning remains in effect
- on the alert
- on guard against danger, attack, etc
- watchful; readyon the alert for any errors
- to warn or signal (troops, police, etc) to prepare for action
- to warn of danger, an attack, etc
Word Origin and History for alerting
"on the watch," 1590s, from French alerte "vigilant" (17c.), from phrase à l'erte "on the watch," from Italian all'erta "to the height," from erta "lookout, high tower," noun use of fem. of erto, past participle of ergere "raise up," from Latin erigere "raise" (see erect). The adjective is attested from 1610s, the noun from 1803, and the verb from 1868. Related: Alerted; alerting.
Idioms and Phrases with alerting
see on the alert.