alert

a·lert

A0190000 (ə-lûrt′)adj.1. Vigilantly attentive; watchful: alert to danger; an alert bank guard. See Synonyms at careful.2. Mentally responsive and perceptive; quick.3. Brisk or lively in action: the bird's alert hopping from branch to branch.n.1. A signal that warns of attack or danger: Sirens sounded the alert for an air raid.2. A condition or period of heightened watchfulness or preparation for action: Nuclear-armed bombers were put on alert during the crisis.tr.v. a·lert·ed, a·lert·ing, a·lerts To notify of approaching danger or action; warn: a flashing red light that alerted motorists to trouble ahead.Idiom: on the alert Watchful and prepared for danger, emergency, or opportunity: bird watchers on the alert for a rare species.

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[French alerte, from Italian all' erta, on the lookout : alla, to the, on the (from Latin ad illam, to that : ad, to; see ad- + illam, feminine accusative sing. of ille, that, the; see al- in Indo-European roots) + erta, lookout (from past participle of ergere, to raise, from Latin ērigere; see erect).]

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a·lert′ly adv.a·lert′ness n.

alert

(əˈlɜːt) adj (usually postpositive) 1. vigilantly attentive: alert to the problems. 2. brisk, nimble, or livelyn3. an alarm or warning, esp a siren warning of an air raid4. the period during which such a warning remains in effect5. on the alert a. on guard against danger, attack, etcb. watchful; ready: on the alert for any errors. vb (tr) 6. to warn or signal (troops, police, etc) to prepare for action7. to warn of danger, an attack, etc[C17: from Italian all'erta on the watch, from erta lookout post, from ergere to build up, from Latin ērigere; see erect] aˈlertly adv aˈlertness n

a•lert

(əˈlɜrt)

adj., n., v. a•lert•ed, a•lert•ing. adj. 1. fully aware and attentive; wide-awake. 2. quick to understand or respond; perceptive; acute. 3. watchful and ready to act; vigilant. n. 4. a warning of an impending military attack, a storm, etc. 5. the period such a warning or alarm is in effect. 6. a state of vigilance or readiness, as before an expected attack. v.t. 7. to warn to prepare for an attack. 8. to warn of an impending raid, storm, etc. 9. to cause to be on guard; warn: to alert gardeners to the dangers of some pesticides. Idioms: on the alert, ready, as for danger; vigilant. [1590–1600; < Italian all'erta=all(a) to, on the + erta lookout] a•lert′ly, adv. a•lert′ness, n.

alert

1. Readiness for action, defense or protection.
2. A warning signal of a real or threatened danger, such as an air attack.
3. The period of time during which troops stand by in response to an alarm.
4. To forewarn; to prepare for action. See also airborne alert.
5. (DOD only) A warning received by a unit or a headquarters which forewarns of an impending operational mission.
6. (DOD only) In aviation, an aircraft and aircrew that are placed in an increased state of readiness so that they may be airborne in a specified period of time after a launch order is received. See also air defense warning conditions; ground alert; warning order.

alert

Past participle: alerted
Gerund: alerting

Imperative
alert
alert

Present
I alert
you alert
he/she/it alerts
we alert
you alert
they alert

Preterite
I alerted
you alerted
he/she/it alerted
we alerted
you alerted
they alerted

Present Continuous
I am alerting
you are alerting
he/she/it is alerting
we are alerting
you are alerting
they are alerting

Present Perfect
I have alerted
you have alerted
he/she/it has alerted
we have alerted
you have alerted
they have alerted

Past Continuous
I was alerting
you were alerting
he/she/it was alerting
we were alerting
you were alerting
they were alerting

Past Perfect
I had alerted
you had alerted
he/she/it had alerted
we had alerted
you had alerted
they had alerted

Future
I will alert
you will alert
he/she/it will alert
we will alert
you will alert
they will alert

Future Perfect
I will have alerted
you will have alerted
he/she/it will have alerted
we will have alerted
you will have alerted
they will have alerted

Future Continuous
I will be alerting
you will be alerting
he/she/it will be alerting
we will be alerting
you will be alerting
they will be alerting

Present Perfect Continuous
I have been alerting
you have been alerting
he/she/it has been alerting
we have been alerting
you have been alerting
they have been alerting

Future Perfect Continuous
I will have been alerting
you will have been alerting
he/she/it will have been alerting
we will have been alerting
you will have been alerting
they will have been alerting

Past Perfect Continuous
I had been alerting
you had been alerting
he/she/it had been alerting
we had been alerting
you had been alerting
they had been alerting

Conditional
I would alert
you would alert
he/she/it would alert
we would alert
you would alert
they would alert

Past Conditional
I would have alerted
you would have alerted
he/she/it would have alerted
we would have alerted
you would have alerted
they would have alerted

Thesaurus

Noun	1.	alert - condition of heightened watchfulness or preparation for action; "bombers were put on alert during the crisis"qui vivepreparedness, readiness, preparation - the state of having been made ready or prepared for use or action (especially military action); "putting them in readiness"; "their preparation was more than adequate"air alert - the condition in which combat aircraft are airborne and ready for an operation; "aircraft in the Mideast are on air 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)strip alert - a state of readiness for domestic defense aircraft; "the Air Force will keep fighters on strip alert at bases around the country"
	2.	alert - a warning serves to make you more alert to dangeralertingwarning - a message informing of danger; "a warning that still more bombs could explode"
	3.	alert - an automatic signal (usually a sound) warning of dangeralarum, warning signal, alarmtorpedo - a small explosive device that is placed on a railroad track and fires when a train runs over it; the sound of the explosion warns the engineer of danger aheadsignal, signaling, sign - any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped"air alert - the warning signal that begins a period of preparation for an enemy air attackburglar alarm - a loud warning signal produced by a burglar alarm; "they could hear the burglar alarm a mile away"fire alarm - a shout or bell to warn that fire has broken outfoghorn, fogsignal - a loud low warning signal that can be heard by fogbound shipshorn - a noise made by the driver of an automobile to give warning;red flag - a flag that serves as a warning signal; "we didn't swim at the beach because the red flag was up"siren - a warning signal that is a loud wailing soundalarm bell, tocsin - the sound of an alarm (usually a bell)
Verb	1.	alert - 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"alarmwarn - notify of danger, potential harm, or risk; "The director warned him that he might be fired"; "The doctor warned me about the dangers of smoking"wake - make aware of; "His words woke us to terrible facts of the situation"
Adj.	1.	alert - engaged in or accustomed to close observation; "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"watchfulwary - marked by keen caution and watchful prudence; "they were wary in their movements"; "a wary glance at the black clouds"; "taught to be wary of strangers"awake - not in a state of sleep; completely conscious; "lay awake thinking about his new job"; "still not fully awake"lively - full of life and energy; "a lively discussion"; "lively and attractive parents"; "a lively party"unalert, unvigilant, unwatchful - not alert to what is potentially dangerous
	2.	alert - quick and energetic; "a brisk walk in the park"; "a lively gait"; "a merry chase"; "traveling at a rattling rate"; "a snappy pace"; "a spanking breeze"brisk, spanking, zippy, rattling, lively, merry, snappyenergetic - possessing or exerting or displaying energy; "an energetic fund raiser for the college"; "an energetic group of hikers"; "it caused an energetic chemical reaction"
	3.	alert - mentally perceptive and responsive;"an alert mind"; "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"awake, aliveaware, cognisant, cognizant - (sometimes followed by `of') having or showing knowledge or understanding or realization or perception; "was aware of his opponent's hostility"; "became aware of her surroundings"; "aware that he had exceeded the speed limit"

alert

adjective1. attentive, careful, awake, wary, vigilant, perceptive, watchful, ready, on the lookout, circumspect, observant, on guard, wide-awake, on your toes, on the watch, keeping a weather eye on, heedful He had been spotted by an alert neighbour.
attentive slow, unaware, careless, oblivious, inactive, languid, unconcerned, lethargic, unwary, listless, heedless2. quick-witted, spirited, quick, bright, sharp, active, lively, brisk, on the ball (informal), nimble, agile, sprightly, bright-eyed and bushy-tailed (informal) His grandfather is still alert at 93.noun1. warning, signal, alarm, siren Due to a security alert, the train did not stop at our station.
warning all clearverb1. warn, signal, inform, alarm, notify, tip off, forewarn I was hoping he'd alert the police.
warn lull

alert

adjective1. Vigilantly attentive:observant, open-eyed, vigilant, wakeful, wary, watchful, wide-awake.Idiom: on the ball.2. Mentally quick and original:bright, clever, intelligent, keen, quick, quick-witted, sharp, sharp-witted, smart.Idiom: smart as a whip.nounA signal that warns of imminent danger:alarm, alarum, tocsin, warning.verbTo notify (someone) of imminent danger or risk:admonish, alarm, caution, forewarn, warn.

Translations

使警觉提醒机灵的警惕的警报

alert

(əˈləːt) adjective1. quick-thinking. She's very old but still very alert. 思考靈敏的 机灵的2. (with to) watchful and aware. You must be alert to danger. 機警的 警觉的 noun a signal to be ready for action. 警報 警报 verb to make (someone) alert; to warn. The sound of gunfire alerted us to our danger. 使警覺 使警觉aˈlertly adverb 警覺地 警觉地aˈlertness noun 警覺 警觉on the alert on the watch (for). We were on the alert for any sound that might tell us where he was. 保持警覺 警觉着

alert

→ 提醒zhCN, 警惕的zhCN