Alert
Alert verb - To give notice to beforehand especially of danger or risk.
Usage example: alerted us to the possibility that the roads would be flooded and we might have to take a detour
Warn is a synonym for alert in action topic. In some cases you can use "Warn" instead a verb "Alert". popular alternative
Warn
Warn verb - To give notice to beforehand especially of danger or risk.
Usage example: the lifeguard warned the boys that if they continued playing so rough, someone was sure to get hurt
Alert is a synonym for warn in action topic. You can use "Alert" instead a verb "Warn", if it concerns topics such as notify, give notice of possible occurrence. popular alternative
Mutual synonyms
Common collocations
Both words in one sentence
- Seizure response dog and diabetic alert dogs are trained to predict upcoming attacks and warn their owners.
Source: Evil-Detecting Dog -
Out-of-Character Alert: Used numerous times by Charlie and his parents, to warn the other that they're in trouble.
Source: Literature / Lionboy - Civil Defense seemed to be everywhere — what's now known as the Emergency Alert System was then called CONELRAD, which could only be used to warn the population of incoming Soviet bombers.
Source: Useful Notes / The Fifties
Cite this Source
Warn and Alert. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/alert/warn
Alert & Warn. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/alert/warn>.
Warn or Alert. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/alert/warn.
Google Ngram Viewer shows how "alert" and "warn" have occurred on timeline