Definitions for: Alert


[n] an automatic signal (usually a sound) warning of danger
[n] a warning serves to make you more alert to danger
[n] condition of heightened watchfulness or preparation for action; "bombers were put on alert during the crisis"
[adj] not unconscious; especially having become conscious; "the patient is now awake and alert"
[adj] very attentive or observant; "an alert and responsive baby is a joy"; "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty"
[adj] (usually followed by `to') showing acute awareness; mentally perceptive; "alert to the problems"; "alive to what is going on"; "awake to the dangers of her situation"; "was now awake to the reality of his predicament"
[adj] mentally responsive; "an alert mind"
[v] warn or arouse to a sense of danger or call to a state of preparedness; "The empty house alarmed him"; "We alerted the new neighbors to the high rate of burglaries"



Webster (1913) Definition: A*lert" ([.a]*l[~e]rt"), a. [F. alerte, earlier [`a]
l'erte on the watch, fr. It. all' erta on the watch, prop.
(standing) on a height, where one can look around; erta a
declivity, steep, erto steep, p. p. of ergere, erigere, to
erect, raise, L. erigere. See Erect.]
1. Watchful; vigilant; active in vigilance.

2. Brisk; nimble; moving with celerity.

An alert young fellow. --Addison.

Syn: Active; agile; lively; quick; prompt.


A*lert", n. (Mil.)
An alarm from a real or threatened attack; a sudden attack;
also, a bugle sound to give warning. ``We have had an
alert.'' --Farrow.

On the alert, on the lookout or watch against attack or
danger; ready to act.

Synonyms: alarm, alarm, alarum, alerting, alive(p), argus-eyed, aware(p), conscious, fly, heads-up, intelligent, lidless, on the alert(p), on the job(p), open-eyed, perched, perked, perked up, qui vive, sleepless, vigilant, wakeful, warning signal, watchful, wide-awake

Antonyms: unalert

See Also: alarm bell, awake(p), burglar alarm, fire alarm, foghorn, fogsignal, horn, lively, preparation, preparedness, readiness, red alert, red flag, sign, signal, signaling, siren, tocsin, wake, warn, warning, wary

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