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Definition of Alert
1. Noun. Condition of heightened watchfulness or preparation for action. "Bombers were put on alert during the crisis"
Generic synonyms: Preparation, Preparedness, Readiness
Specialized synonyms: Air Alert, Red Alert, Strip Alert
2. Adjective. Engaged in or accustomed to close observation. "Constantly alert and vigilant, like a sentinel on duty"
Similar to: Argus-eyed, Open-eyed, Vigilant, Wakeful, Fly, Heads-up, Wide-awake, Lidless, Sleepless
Also: Wary, Awake, Lively
Derivative terms: Alertness, Watchfulness, Watchfulness
Antonyms: Unalert
3. Verb. Warn or arouse to a sense of danger or call to a state of preparedness. "We alerted the new neighbors to the high rate of burglaries"
4. Noun. A warning serves to make you more alert to danger.
5. Adjective. Quick and energetic. "A spanking breeze"
Similar to: Energetic
Derivative terms: Briskness, Liveliness, Zip
6. Noun. An automatic signal (usually a sound) warning of danger.
Specialized synonyms: Torpedo, Air Alert, Burglar Alarm, Fire Alarm, Foghorn, Fogsignal, Horn, Red Flag, Siren, Alarm Bell, Tocsin
Generic synonyms: Sign, Signal, Signaling
7. Adjective. Mentally perceptive and responsive. "Was now awake to the reality of his predicament"
Similar to: Aware, Cognisant, Cognizant
Derivative terms: Alertness, Aliveness
Definition of Alert
1. a. Watchful; vigilant; active in vigilance.
2. n. An alarm from a real or threatened attack; a sudden attack; also, a bugle sound to give warning.
Definition of Alert
1. Adjective. Attentive; awake; on-guard. ¹
2. Noun. An alarm. ¹
3. Noun. A notification of higher importance than an advisory. ¹
4. Verb. To give warning to. ¹
¹ Source: wiktionary.com
Definition of Alert
1. ready for sudden action [adj ALERTER, ALERTEST] : ALERTLY [adv] / to warn [v -ED, -ING, -S] - See also: warn
Medical Definition of Alert
1.
Lexicographical Neighbors of Alert
Literary usage of Alert
Below you will find example usage of this term as found in modern and/or classical literature:
1. Official Letters of the Military and Naval Officers of the United States by John Brannan (1823)
"ADC CAPTURE OF THE alert. AT SEA, August 17, 1812. ... The alert was out for the
purpose of taking the Hornet. I have the honour, &c. D. PORTER, Hon. ..."
2. The History of the War, Between the United States and Great-Britain, which by John Russell (1815)
"The alert was out for the purpose of taking the Hornet! ... SIR—-Finding myself
much embarrassed by the alert, from the great number of prisoners we have ..."
3. Cyclopaedia of Political Science, Political Economy, and of the Political by John Joseph Lalor (1883)
"... with blue lights at the harbor mouth, to warn the British fleet to be upon
the alert. The story spread, and all opponents of the war, in New England and ..."
4. Harper's New Monthly Magazine by Henry Mills Alden (1884)
"The British government presented to the United States for the use of the Greely
relief expedition the steamer alert. The President accepted, with the thanks ..."