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
show current usage.
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Recent Examples of alert
Ca Weather Bot,
Sacbee.com,
23 June 2026
Farther north in Germany, where five people died in swimming accidents related to the heat wave, authorities have also issued highest level alerts for parts of their countries.
—
Elmira Aliieva,
NBC news,
23 June 2026
Forbes.com,
26 June 2026
Regular scans will allow people to monitor their entire body for changes, which has the potential to alert individuals to early signs of chronic illness and disease.
—
New Atlas,
26 June 2026
Anthony Thompson,
USA Today,
18 June 2026
The National Weather Service warned readers to remain alert, as tornadoes can develop quickly from severe thunderstorms.
—
John Tufts,
IndyStar,
18 June 2026
See All Example Sentences for alert
Noun
Do not burn debris or other items during an air quality alert.
—
Ca Weather Bot,
Sacbee.com,
23 June 2026
Farther north in Germany, where five people died in swimming accidents related to the heat wave, authorities have also issued highest level alerts for parts of their countries.
—
Elmira Aliieva,
NBC news,
23 June 2026
Verb
Leveraging insights from medical records and health plan data, athenahealth was able to alert the national insurer and medical practice about potential gaps in care.
—
Forbes.com,
26 June 2026
Regular scans will allow people to monitor their entire body for changes, which has the potential to alert individuals to early signs of chronic illness and disease.
—
New Atlas,
26 June 2026
Adjective
Authorities and officials continue to urge visitors to check beach hazard warnings, remain alert to changing ocean conditions and avoid turning their backs on the water, particularly during periods of elevated surf and strong currents.
—
Anthony Thompson,
USA Today,
18 June 2026
The National Weather Service warned readers to remain alert, as tornadoes can develop quickly from severe thunderstorms.
—
John Tufts,
IndyStar,
18 June 2026
See All Example Sentences for alert
Recent Examples of Synonyms for alert
Noun
-
Topical hormone treatments like vaginal estrogen, from which the FDA recently removed a warning label, are becoming commonplace.
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This will be elevated to an extreme heat warning by Monday or Tuesday, and cooling centers will be opened.
Noun
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But the book’s ruminative watchfulness is unsuccessfully conjugated in this overly sedate play with music, which has the feel of a song cycle, though sung by the fine cast with gorgeous, lonely sorrow.
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Hong Kong icon Tony Leung has channeled brooding urban energy for the masterpieces of Wong Kar-Wai, balancing the debonair ennui of Marcello Mastroianni with the quiet watchfulness of Montgomery Clift.
Verb
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Seeking respite from the sizzling weather, people and companies across Europe are snapping up portable and fixed air conditioners as some countries warn the heat wave could intensify.
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Opponents argue agencies could avoid some of the service cuts officials have warned about by pausing capital improvement projects, including extensions.
Adjective
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This technique is designed to break the mental association between your bed and the frustration of being awake.
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Fire officials later said the lifeguard remained awake throughout the ordeal and was transported to a nearby hospital for treatment.
Adjective
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Berkeley adopted a more cautious approach.
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The data also points to a more cautious approach to automation than much of the AI industry’s messaging might suggest.
Adjective
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Alan was successful, intelligent, social and well-liked.
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Our goal is not to tell you what to think, but to give you the essential knowledge and understanding to come to your own intelligent conclusions.
Adjective
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Either way, Aestura’s Atobarrier 365 Ceramide Cream Mist is an easy way to give quick hydration to dry, stressed skin, thanks to an ultrafine spray packed with ceramides.
-
From California politics to safety concerns on Sacramento roads, here’s a quick digest of some of the top stories for June 23, 2026.
Noun
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The women, who also wore Mexico jerseys, were planning to attend the watch party.
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The devices were hidden in a pack of cigarettes, the informant’s watch, and a cellphone.
Cite this Entry
“Alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alert. Accessed 1 Jul. 2026.
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