alert (third-person singular simple present alerts, present participle alerting, simple past and past participle alerted)
1.fully aware and attentive; wide-awake; keen, an alert mind.
2.swift; agile; nimble.
3.an attitude of vigilance, readiness, or caution, as before an expected attack.
4.a warning or alarm of an impending military attack, a storm, etc., We'd just boarded the bus when the alert sounded.
5.the period during which such a warning or alarm is in effect.
6.to warn (troops, ships, etc.) to prepare for action.
7.to warn of an impending raid, attack, storm, etc., The radio alerted coastal residents to prepare for the hurricane.
8.to advise or warn; cause to be on guard, to alert gardeners to the dangers of some pesticides.
9.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.
1. vigilantly attentive, alert to the problems
2. brisk, nimble, or lively noun
3. an alarm or warning, esp a siren warning of an air raid
4. the period during which such a warning remains in effect
5. on the alert on guard against danger, attack, etc watchful; ready, on the alert for any errorsverb (transitive)
6. to warn or signal (troops, police, etc) to prepare for action
7. to warn of danger, an attack, etc Derived Formsalertly, adverbalertness, noun Word OriginC17, from Italian all'erta on the watch, from erta lookout post, from ergere to build up, from Latin ērigere; see erectCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source
"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 186
8. Related, Alerted; alerting.
see, on the alert The American Heritage® Idioms DictionaryCopyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Cite This Source
He's always been so alert and in control.
The fever had left him, and while he looked pale beneath his cocoa skin, he was alert and his speech coherent.
How did you alert them?
I'll issue an alert to the Immortals.
She had to get out of there before Jade found a way to alert Sasha.
She perched on the edge of one table, fidgeting hands in her lap and bright features alert as she focused on some point on the screen.
Fully alert, he listened, but heard only night noises, the ticking of the hall clock, a slight breeze, the ever-present furnace rumbling heat to the old building.
And there is nothing hidden in these injections that will alert your kind?
Actually, all she wanted to do was alert him that she was nervous about it, but if it made him feel better to know she was willing to discuss intimacy with him now, then she would listen.
Half a moment before she stepped through the portal, she triggered a magic alert that reverberated through him.
We can still break through those in the north provided we alert our allies and pull in the southern armies, Hilden explained.
But that he was sufficiently alert as the principal adviser of the elector the results of his labours in that capacity amply prove.
It will know everyone who is supposed to be in the house and alert you when someone else is in the house (replacing the family dog of old in whom we never fully placed our trust).
That night, after I had hung my stocking, I lay awake a long time, pretending to be asleep and keeping alert to see what Santa Claus would do when he came.
But alert and healthy natures remember that the sun rose clear.
He entered the drawing room with his usual alert step, glancing rapidly round the company.
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