1
as in warning
the act or an instance of telling beforehand of danger or risk
the white flash of the doe's raised tail, giving the "danger" alert to her fawns
Synonyms & Similar Words
Relevance
2
as in watchfulness
the state of being constantly attentive and responsive to signs of opportunity, activity, or danger
the doctor told the patient to be on the alert for any signs of infection
Synonyms & Similar Words
Antonyms & Near Antonyms
as in to warn
to give notice to beforehand especially of danger or risk
alerted us to the possibility that the roads would be flooded and we might have to take a detour
Synonyms & Similar Words
Antonyms & Near Antonyms
1
as in awake
paying close attention usually for the purpose of anticipating approaching danger or opportunity
she needed to stay alert throughout the train ride so as not to miss her stop
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in cautious
having or showing a close attentiveness to avoiding danger or trouble
warned us to be alert to the presence of pickpockets on the crowded bus
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in intelligent
having or showing quickness of mind
an alert and well-trained sheep dog who can handle difficult situations
Synonyms & Similar Words
Antonyms & Near Antonyms
4
as in quick
having or showing the ability to respond without delay or hesitation
an alert force of commandos, ready to go on a mission at a moment's notice
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of alert
Jijo Malayil, Interesting Engineering, 27 Apr. 2026
Have multiple ways to receive warnings Fort Worth’s outdoor warning system should be used as a supplemental warning tool, along with two or three other ways to received alerts, according to the city.
—Brayden Garcia, Fort Worth Star-Telegram, 27 Apr. 2026
Cierra Morgan, Los Angeles Times, 1 May 2026
The two detectives were working an overtime detail when a witness alerted them about what was happening.
—Colin Mixson, New York Daily News, 1 May 2026
Megan Janetsky, Los Angeles Times, 1 May 2026
Policymakers will also be alert to any upcoming action from Britain's Labour government to limit the inflation impact on households and businesses.
—ABC News, 30 Apr. 2026
See All Example Sentences for alert
Noun
Human oversight remains part of the workflow through integration with Robotic Security Operations Center, where remote analysts monitor activity, verify alerts, and direct responses when required, ensuring continuous supervision alongside autonomous functions, reports Electrek.
—Jijo Malayil, Interesting Engineering, 27 Apr. 2026
Have multiple ways to receive warnings Fort Worth’s outdoor warning system should be used as a supplemental warning tool, along with two or three other ways to received alerts, according to the city.
—Brayden Garcia, Fort Worth Star-Telegram, 27 Apr. 2026
Verb
Then in March, Nordstrom’s internal investigation team alerted police to a broader pattern of fraudulent transactions.
—Cierra Morgan, Los Angeles Times, 1 May 2026
The two detectives were working an overtime detail when a witness alerted them about what was happening.
—Colin Mixson, New York Daily News, 1 May 2026
Adjective
Rosen said it could be used to bolster alert systems, letting scientists alert governments to the need for evacuations in cases of volcano eruptions, for example.
—Megan Janetsky, Los Angeles Times, 1 May 2026
Policymakers will also be alert to any upcoming action from Britain's Labour government to limit the inflation impact on households and businesses.
—ABC News, 30 Apr. 2026
See All Example Sentences for alert
Recent Examples of Synonyms for alert
Noun
-
Nevada lacks a key seismic safety tool that California, Oregon and Washington all have — the earthquake early warning system run by the USGS, which sends alerts to smartphones or computers before the shaking starts.—
Los Angeles Times,
Los Angeles Times,
4 May 2026
-
This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.—
CA Weather Bot,
Sacbee.com,
4 May 2026
Noun
-
In nine short, potent chapters, Beckerman lays out the essential traits of an effective dissident — loyalty, recklessness and watchfulness, among them — to illustrate how communities of resistance are built from the ground up.—
Marc Weingarten,
Los Angeles Times,
2 May 2026
-
Noonan plays Michael in the film with a quiet watchfulness that contrasts Jackie’s nervy, open wound of a woman played with emotive genius by Karen Sillas.—
Ryan Lattanzio,
IndieWire,
1 May 2026
Verb
-
Andrillon warned against trying to harness the sleeping mind in the service of the waking world.—
Shayla Love,
New Yorker,
1 May 2026
-
Asian economies prove resilient in wake of war Asian economies are proving resilient in the face of the energy shock sparked by the Iran war, though analysts warn of higher and persistent inflation.—
Andrew Edgecliffe-Johnson,
semafor.com,
30 Apr. 2026
Adjective
-
Electrodes measuring body and brain activity verified that the participants were not awake.—
Shayla Love,
New Yorker,
1 May 2026
-
Waking up and staying awake is the hardest part of the day for many, but this alarm clock can make the whole process much smoother.—
BestReviews,
Chicago Tribune,
30 Apr. 2026
Adjective
-
Be cautious of any company that pushes a specific program without understanding your circumstances.—
Rebecca Safier,
USA Today,
29 Apr. 2026
-
Visitors should be cautious about going into a sea cave without a guide, as a swell can flow into it and dramatically raise the water level in a matter of seconds, pushing kayaks into rocks and leaving little air for those trapped inside.—
Tribune News Service,
Baltimore Sun,
29 Apr. 2026
Adjective
-
Cold, calculating and highly intelligent, Dedra saw the rebellion coming when none of her other peers did.—
Brian Truitt,
USA Today,
3 May 2026
-
Here, intelligent driving features are ubiquitous, even in affordable models.—
Simone McCarthy,
CNN Money,
2 May 2026
Adjective
-
The reactive Moon opposes Mars, creating tension between quick reactions and thoughtful dialogue.—
Tarot.com,
The Orlando Sentinel,
29 Apr. 2026
-
But, a host of hotels are just a quick zip from Malé.—
Shradha Shahani,
Condé Nast Traveler,
28 Apr. 2026
Noun
-
The last month has seen extensive rain, tornado watches, then warnings and flooding as the Des Plaines and Fox rivers were filled beyond capacity, Kumar said.—
Joseph States,
Chicago Tribune,
30 Apr. 2026
-
From weeknight dinners to Saturday afternoon football watch parties, these slow-cooker brisket sandwiches that only require 10 minutes of hands-on time are the tastiest solution.—
Cameron Beall,
Southern Living,
30 Apr. 2026
Cite this Entry
“Alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alert. Accessed 6 May. 2026.
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