alert
US: /əˈɫɝt/
UK: /ɐlˈɜːt/
UK: /ɐlˈɜːt/
English Vietnamese dictionary
alert /ə'lə:t/
- tính từ
- tỉnh táo, cảnh giác
- linh lợi, nhanh nhẹn, nhanh nhẫu, hoạt bát
- danh từ
- sự báo động, sự báo nguy
- to put on the alert: đặt trong tình trạng báo động
- sự báo động phòng không; thời gian báo động phòng không
- sự cảnh giác, sự đề phòng
- to be on the alert: cảnh giác đề phòng
- sự báo động, sự báo nguy
Advanced English dictionary
adjective, verb, noun
+ adjective
1 able to think quickly; quick to notice things: Suddenly he found himself awake and fully alert. + Two alert scientists spotted the mistake. + Try to stay alert while driving at night. + an alert mind + mentally alert
2 ~ to sth aware of sth, especially a problem or danger: We must be alert to the possibility of danger. + She was alert to the slightest sound.
alertly adjective
alertness noun [U]
+ verb [often passive]
1 to warn sb about a dangerous or urgent situation: [VN] Neighbours quickly alerted the emergency services. + Alerted by a noise downstairs, he sat up and turned on the light. [also VN (that), VN to inf]
2 [VN] ~ sb to sth to make sb aware of sth: They had been alerted to the possibility of further price rises.
+ noun
1 [sing., U] a situation in which people are watching for danger and ready to deal with it: Police are warning the public to be on the alert for suspicious packages. + More than 5 000 troops have been placed on (full) alert.
2 [C] a warning of danger or of a problem: a bomb / fire alert
See also -
Thesaurus dictionary
adj.
1 awake, wide awake, watchful, vigilant, attentive, heedful, wary, cautious, on the qui vive, aware, on guard, on the lookout, observant, Colloq on the ball, on one's toes:
The sentinels must remain alert throughout the night. Kenneth is alert to the perils of smoking cigarettes.
2 active, nimble, lively, agile, active, quick, spry, sprightly, vivacious:
He is an alert and joyous old soul.
n.
3 lookout:
She is always on the alert for new ways of saving money.
4 alarm, warning, signal, siren:
Sound the air-raid alert!
v.
5 warn, caution, advise, alarm, forewarn, signal, notify:
We must alert him to the fact that the man is a vicious killer.
Collocation dictionary
ADJ.
red
His sudden disappearance triggered a red alert among his friends.
| nationwide | bomb, fire, flood, pollution, security
A security alert was issued after four men escaped from the prison.
VERB + ALERT
issue, put out, raise, sound
They rang the church bells to sound the alert and the villagers then fled.
| spark, trigger | call off
The alert was called off when it was found that the bomb was not live.
ALERT + VERB
go out
A nationwide alert went out for three escaped prisoners.
PREP.
on the ~ | ~ for
You should always be on the alert for anyone who looks suspicious.
PHRASES
be on full alert
The security forces are now on full alert.
| keep/put/place sb on full alert
Thousands of police were put on full alert at all main roads leading to the city.
| a state of alert
The army was yesterday placed on a state of alert in case of more riots.
VERBS
be, look, seem | become | remain, stay | keep sb
The machine should help to keep the pilot alert.
ADV.
very | fully | immediately, instantly, suddenly
There was a noise outside and he was suddenly alert.
| always, constantly | mentally
He was as mentally alert as a man half his age.
PREP.
to
Climbers need to be alert to possible dangers.
Concise English dictionary
alerts|alerted|alertingə'lɜːt
noun
+condition of heightened watchfulness or preparation for action
+a warning serves to make you more alert to danger
+an automatic signal (usually a sound) warning of danger
verb
+warn or arouse to a sense of danger or call to a state of preparedness
adj.
+very attentive or observant
+mentally responsive
+not unconscious; especially having become conscious
+(usually followed by `to') showing acute awareness; mentally perceptive
