red alert

red alert
the highest level of alert when an attack by the enemy seems imminent (or more generally a state of alert resulting from imminent danger)
Hypernyms: ↑alert, ↑qui vive

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: the final stage of alert in which attack by enemy aircraft appears to be imminent; also : the signal for this

at the sound of the red alert pedestrians must take shelter

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1. (in military or civilian defense) the most urgent form of alert, signaling that an enemy attack is believed to be imminent.
2. the signal or alarm sounded for this alert. Cf. blue alert, white alert, yellow alert.
3. a signal or warning that a critical situation is developing or has occurred.
4. the period during which a state of crisis or danger is declared to exist.

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red alert noun
A state of readiness for imminent crisis, eg war or natural disaster
• • •
Main Entry:red

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red alert UK US noun [countable] [singular red alert plural red alerts]
a warning that something very dangerous is likely to happen
Thesaurus: warning and warningssynonym

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red alert,
1. an alert to warn that an attack by enemy aircraft is imminent, as when hostile aircraft appear in an air defense sector.
2. any state of readiness in the face of imminent danger: »

Admissions to London hospitals [due to a flu epidemic] ... totalled slightly over 2,000, above the figure for a similar period during the last hospital “red alert” (Manchester Guardian Weekly).

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noun, pl ⋯ alerts
: a warning that there is great danger
— usually singular

The commander issued a red alert.

A red alert was sounded on the island as the storm approached.


The troops have been put on red alert.

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ˌred aˈlert [red alert] noun uncountable, singular
a situation in which you are prepared for sth dangerous to happen; a warning of this

Following the bomb blast, local hospitals have been

put on red alert


The water authority has issued a red alert until the cause of the pollution has been removed.

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red alert
see red a. 19 a.

Useful english dictionary. 2012.

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