Definition of Alert

1. Noun. Condition of heightened watchfulness or preparation for action. "Bombers were put on alert during the crisis"

Exact synonyms: Qui Vive
Generic synonyms: Preparation, Preparedness, Readiness
Specialized synonyms: Air Alert, Red Alert, Strip Alert



2. 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"
Exact synonyms: Alarm
Generic synonyms: Warn
Specialized synonyms: Wake
Derivative terms: Alarm

3. Adjective. Engaged in or accustomed to close observation. "Constantly alert and vigilant, like a sentinel on duty"

4. Noun. A warning serves to make you more alert to danger.
Exact synonyms: Alerting
Generic synonyms: Warning
Specialized synonyms: Eas, Emergency Alert System

5. Adjective. Quick and energetic. "A spanking breeze"
Exact synonyms: Brisk, Lively, Merry, Rattling, Snappy, Spanking, Zippy
Similar to: Energetic
Derivative terms: Briskness, Liveliness, Zip

6. Noun. An automatic signal (usually a sound) warning of danger.

7. Adjective. Mentally perceptive and responsive. "Was now awake to the reality of his predicament"
Exact synonyms: Alive, Awake
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. Attentive and quick to think or act. (18 Nov 1997)

Alert Pictures

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Lexicographical Neighbors of Alert

aleph-one
aleph-zero
aleph number
alephs
alepidote
alepidotes
alepine
alepines
alepole
alepoles
aleptinemia
alerce
alerces
alerion
alerions
alert (current term)
alert five
alerted
alerter
alertest
alerting
alertly
alertness
alertnesses
alerts
ales
aleshop
aleshops
alestake
alestakes

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 ..."

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