Meaning of ALERT in English

ALERT

(~s, ~ing, ~ed)

Frequency: The word is one of the 3000 most common words in English.

1.

If you are ~, you are paying full attention to things around you and are able to deal with anything that might happen.

We all have to stay ~...

He had been spotted by an ~ neighbour.

= attentive

ADJ

~ness

The drug improved mental ~ness.

N-UNCOUNT

2.

If you are ~ to something, you are fully aware of it.

The bank is ~ to the danger.

ADJ: v-link ADJ to n

3.

An ~ is a situation in which people prepare themselves for something dangerous that might happen soon.

Due to a security ~, this train will not be stopping at Oxford Circus.

N-COUNT

4.

If you ~ someone to a situation, especially a dangerous or unpleasant situation, you tell them about it.

He wanted to ~ people to the activities of the group...

I was hoping he’d ~ the police.

VERB: V n to n, V n

5.

see also red ~

6.

If soldiers or police are on ~, they are ready to deal with anything that may happen.

Soldiers and police have been put on ~.

PHRASE: PHR after v, v-link PHR

7.

If you are on the ~ for something, you are ready to deal with it if it happens.

They want to be on the ~ for similar buying opportunities.

PHRASE: PHR after v, v-link PHR

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