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
Kansas City Star, 7 Aug. 2025
The alert was also issued in El Dorado and Alpine counties.
—Darrell Smith, Sacbee.com, 6 Aug. 2025
Irene Wright, Miami Herald, 5 Aug. 2025
The third-party Transit app has begun using the agency’s data to alert riders when a scheduled bus has been canceled, the Chicago Sun-Times first reported Monday.
—Talia Soglin, Chicago Tribune, 5 Aug. 2025
Maria Azzurra Volpe, MSNBC Newsweek, 1 Aug. 2025
Here’s a breakdown of the four-tiered alert system from the NWS and what each level entails:
Tsunami warning: Immediate action required
This alert is issued when a tsunami that could result in widespread flooding is either expected or already underway.
—Southern California Weather Report, Oc Register, 30 July 2025
See All Example Sentences for alert
Noun
The traffic alert was reported Wednesday at 9:47 p.m., and the last update concerning this incident was provided on Wednesday at 9:52 p.m.
—Kansas City Star, 7 Aug. 2025
The alert was also issued in El Dorado and Alpine counties.
—Darrell Smith, Sacbee.com, 6 Aug. 2025
Verb
The call consists of a line of notes that taper off as the sound spreads, alerting passersby to the presence of a creature in a nearby stream.
—Irene Wright, Miami Herald, 5 Aug. 2025
The third-party Transit app has begun using the agency’s data to alert riders when a scheduled bus has been canceled, the Chicago Sun-Times first reported Monday.
—Talia Soglin, Chicago Tribune, 5 Aug. 2025
Adjective
However, despite all the efforts, only 11 percent of the ire has so far been contained, and official continue to warn residents to remains alert and follow evacuation orders.
—Maria Azzurra Volpe, MSNBC Newsweek, 1 Aug. 2025
Here’s a breakdown of the four-tiered alert system from the NWS and what each level entails:
Tsunami warning: Immediate action required
This alert is issued when a tsunami that could result in widespread flooding is either expected or already underway.
—Southern California Weather Report, Oc Register, 30 July 2025
See All Example Sentences for alert
Recent Examples of Synonyms for alert
Noun
-
This warning is in effect until 8 p.m. During heat waves, consider the following tips from the NWS Stay hydrated: Drink plenty of fluids.—
CA Weather Bot,
Sacbee.com,
13 Aug. 2025
-
The warning is for Greene, Lenoir and Pitt counties.—
NC Weather Bot,
Charlotte Observer,
13 Aug. 2025
Verb
-
Experts have warned of an impending disaster, with food supplies running out by November.—
Liz Hoffman,
semafor.com,
7 Aug. 2025
-
Experts warned after the measure passed that there would be legal challenges to decide whether existing, more restrictive laws are still legal now that the constitutional amendment is in effect.—
Joanna Allhands,
AZCentral.com,
7 Aug. 2025
Adjective
-
Our brains interpret light as a signal to stay awake and darkness as a cue to fall asleep.3 Blue light, the type emitted by phones, sends an especially strong signal to the brain.—
Julia Ries,
Health,
12 Aug. 2025
-
But just as these two were unable to stay awake through their first date, their adult bodies aren’t cut out for this trip down memory lane, either.—
Genevieve Koski,
Vulture,
6 Aug. 2025
Adjective
-
Be cautious when corresponding with unfamiliar accounts.—
Tamia Fowlkes,
jsonline.com,
14 Aug. 2025
-
To be sure, companies are opting for cautious messaging around AI and its labor implications.—
Pia Singh,
CNBC,
13 Aug. 2025
Adjective
-
The war in Ukraine is creating high pressure innovation in intelligent drones and swarms.—
Sabbir Rangwala,
Forbes.com,
7 Aug. 2025
-
These are dynamic, intelligent, very witty women that can use their words in arguments.—
McKinley Franklin,
HollywoodReporter,
6 Aug. 2025
Adjective
-
However, one quick two-handed push off by No. 5 sent Morris earthbound as the coach quickly became London’s next victim.—
Hailey Hurst,
CNN Money,
14 Aug. 2025
-
These routines are highly edited, almost hypnotic, with quick cuts, each mini-scene overlaid with a time stamp.—
Julie Beck,
The Atlantic,
14 Aug. 2025
Noun
-
But these videos were few and far between—other people can be an obstacle to running your life with the precision of a ticking watch.—
Julie Beck,
The Atlantic,
14 Aug. 2025
-
Meanwhile, YouTube, which is the most popular podcasting platform, launched its own top podcast charts in May and ranks shows weekly by watch time.—
Caitlin Huston,
HollywoodReporter,
14 Aug. 2025
Adjective
-
The most effective approaches for preventing and detecting spoofs and hacks entail always being vigilant.—
Chuck Brooks,
Forbes.com,
1 Aug. 2025
-
Such steps at this stage illustrate how Florida education unions have remained vigilant of the requirements set by a state law in 2023, including recertification.—
Lauren Brensel,
Sun Sentinel,
1 Aug. 2025
Cite this Entry
“Alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alert. Accessed 20 Aug. 2025.
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