Meaning & use
alert
Quick to notice things, especially signs of danger, and ready to respond immediately.
See it in a sentence
The night guard stayed alert throughout his shift, watching every entrance carefully.
A good driver remains alert to pedestrians, cyclists, and sudden changes in traffic.
A note on using this word
Alert is often followed by 'to' when naming what is being watched for, as in 'alert to danger.'
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
Another way to use it
2. noun
A warning about a possible danger, threat, or urgent situation.
The weather service issued an alert warning residents about the approaching storm.
3. verb
To warn someone about a danger or problem so they can respond quickly.
A neighbor alerted the family to the smoke coming from their garage.
Make it your own
Write a sentence using “alert”, then compare your use with the examples above.