alert 1 of 3

alert

2 of 3

verb

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

alert

3 of 3

adjective

1
2
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

Synonym Chooser

How does the adjective alert contrast with its synonyms?

Some common synonyms of alert are vigilant, watchful, and wide-awake. While all these words mean "being on the lookout especially for danger or opportunity," alert stresses readiness or promptness in meeting danger or in seizing opportunity.

alert traders anticipated the stock market's slide

When can vigilant be used instead of alert?

The synonyms vigilant and alert are sometimes interchangeable, but vigilant suggests intense, unremitting, wary watchfulness.

eternally vigilant in the safeguarding of democracy

When might watchful be a better fit than alert?

In some situations, the words watchful and alert are roughly equivalent. However, watchful is the least explicit term.

the watchful eye of the department supervisor

When could wide-awake be used to replace alert?

The words wide-awake and alert can be used in similar contexts, but wide-awake applies to watchfulness for opportunities and developments more often than dangers.

wide-awake companies latched onto the new technology

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of alert
Noun
The group makes up 15% of the total population of these four areas, but researchers say the data point to a dearth in multilingual communication alerts about fire warnings, evacuation procedures and relief services. Ruben Vives, Los Angeles Times, 9 Feb. 2025 Over 90 million people are under winter weather alerts from the Midwest to the Northeast, as a significant winter storm brings snow and ice this weekend. Nadine El-Bawab, ABC News, 8 Feb. 2025
Verb
Felix alerted his father after hearing a man yelling on Dec. 14, 2024. Escher Walcott, People.com, 29 Jan. 2025 Most Popular Most Popular East Hartford officials alert residents as ICE officials spotted entering home East Hartford officials alert residents as ICE officials spotted entering home ICE officials confirmed in another CT town. Pamela McLoughlin, Hartford Courant, 28 Jan. 2025
Adjective
Tracker, a diabetic alert dog, is trained to alert his owners when 5-year-old Paislee has low blood sugar. Colson Thayer, People.com, 27 Jan. 2025 Met Éireann, the Irish Meteorological Service, has issued red warnings, its highest alert level, for wind for much of the country. Alexandra Banner, CNN, 24 Jan. 2025 See all Example Sentences for alert 
Recent Examples of Synonyms for alert
Noun
  • The warning was issued at 11:20 a.m. on Sunday, and the latest update about this incident was released on Sunday at 5:48 p.m.
    Kansas City Star Bot, Kansas City Star, 2 Feb. 2025
  • Researchers began sharing warnings on social media several days ago, urging members of the community to make copies of federal health data before the information was removed from the CDC website.
    Corinne Purtill, Los Angeles Times, 1 Feb. 2025
Verb
  • On top of the existing tsunami warning, the center also issued a threat advisory for Cuba, Honduras and the Cayman Islands.
    Yaakov Katz, Newsweek, 9 Feb. 2025
  • But people who work in civil rights warn the firings are part of a broad attempt to dismantle the infrastructure for addressing systemic inequalities in America.
    Andrea Hsu, NPR, 9 Feb. 2025
Adjective
  • What to Serve with Chicken Wings Cook Mode (Keep screen awake) Ingredients 3 1/2 lb.
    Ivy Odom, Southern Living, 1 Feb. 2025
  • The headband emits acoustic simulation that responds to the user’s brainwaves to induce sleep by suppressing alpha waves, which occur when the brain is in a relaxed state but still awake.
    Alyssa Goldberg, USA TODAY, 24 Jan. 2025
Adjective
  • The employment sub-index also slumped to the lowest level in nearly five years, as businesses remained cautious amid economic uncertainty.
    Anniek Bao, CNBC, 3 Feb. 2025
  • Doral Mayor Christi Fraga struck a more cautious tone.
    Verónica Egui Brito, Miami Herald, 3 Feb. 2025
Adjective
  • Chahine is clearly an intelligent person, and his experience in finance has obviously helped him during this esports journey, making decisions that traditional esports execs may not have made.
    Mike Stubbs, Forbes, 8 Feb. 2025
  • At once personal yet scientific, richly informative and beautifully written, The Genius of Birds celebrates the triumphs of these surprising and fiercely intelligent creatures.
    Kevin Spencer, Twin Cities, 7 Feb. 2025
Adjective
  • Fans online were quick to notice the hug between the singers.
    Marina Watts, People.com, 3 Feb. 2025
  • Jackie and Simone didn’t hold back in their confessionals, and Toya was quick to call it out in real time.
    Shelby Stewart, Essence, 3 Feb. 2025
Noun
  • The only way this deal works for Harrison and Kidd is if the Mavs win their second NBA championship on their watch, and Luka never wins a thing with the Lakers.
    Mac Engel, Fort Worth Star-Telegram, 3 Feb. 2025
  • On her watch, the company has also acquired the catalogs of artists like Bob Dylan, Neil Diamond, and Sting, among others.
    Jem Aswad, Variety, 2 Feb. 2025
Adjective
  • Monday will start the new week with partly cloudy skies and a high of 58 F, with nighttime temperatures cooling to 43 F. Residents should remain vigilant for weather updates and prepare for possible shifts in conditions as the storm system progresses.
    Anders Fogh Rasmussen, Newsweek, 5 Feb. 2025
  • People of faith and conscience will need to be continually vigilant in this new political environment.
    Rev. Steven R. Jungkeit, Hartford Courant, 4 Feb. 2025

Thesaurus Entries Near alert

Cite this Entry

“Alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alert. Accessed 14 Feb. 2025.

More from Merriam-Webster on alert

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!