- alert
- {{Roman}}I.{{/Roman}} nounADJECTIVE▪ heightened, high▪
The country has put its troops on high alert.
▪ full▪ amber, orange, red, yellow▪His sudden disappearance triggered a red alert among his friends.
▪ nationwide▪ bomb, fire, flood, pollution, security, terror▪A security alert was issued after four men escaped from the prison.
▪ email▪Receive regular email alerts about breaking news.
VERB + ALERT▪ issue, put out, raise, sound▪They rang the bells to sound the alert.
▪ spark (esp. BrE), 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.
PREPOSITION▪ on the alert▪ alert 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.
▪ place sb on alert, put sb on alert▪Thousands of police were put on full alert at all main roads leading to the city.
▪ keep sb on alert▪ a state of alert▪{{Roman}}II.{{/Roman}}The army was yesterday placed on a state of alert in case of more riots.
verb{{Roman}}III.{{/Roman}}adj.VERBS▪ be, look, seem▪ become▪ remain, stay▪ keep sb▪The machine should help to keep the pilot alert.
ADVERB▪ extremely, fairly, very, etc.▪ 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.
PREPOSITION▪ to▪Climbers need to be alert to possible dangers.
Alert is used with these nouns: ↑expression, ↑reader
Collocations dictionary. 2013.
