How to Use alert in a Sentence

alert

1 of 3 adjective

• An alert guard stopped the robbers.
• An alert watchdog guarded the door.
• He was tired and had trouble staying alert while he was driving.
• She wasn't mentally alert enough to answer the questions.
• As for the Bulls — irony alert!
  — John Hollinger, New York Times, 1 Feb. 2026
• Use common sense and stay alert.
  — Aaron Randolph, Travel + Leisure, 5 Nov. 2025
• Still, this is the moment to stay alert.
  — Kurt Knutsson, FOXNews.com, 7 Apr. 2026
• The content can keep you alert and scrolling.
  — Malaka Gharib, NPR, 12 Mar. 2026
• At first, your senses are alert.
  — Joanna Fong-Isariyawongse, The Conversation, 23 Jan. 2026
• Stay alert and avoid headphones on trails.
  — Nic Uff, ABC News, 8 June 2026
• Without it, even the tiredest body stays alert.
  — Reem Raouda, CNBC, 8 Feb. 2026
• When alert, a dog will stand tall, muscles tense.
  — Dawn Kovell, Mercury News, 19 Aug. 2025
• This will mute or unmute your phone’s ringer and alert tones.
  — Kurt Knutsson, Fox News, 23 Oct. 2023
• Be alert and watch for fresh tracks, scat, and feeding sites.
  — Thao Nguyen, USA Today, 10 June 2026
• Be alert and watch for fresh tracks, scat, and feeding sites.
  — Thao Nguyen, USA Today, 10 May 2026
• Drift in a bait beneath a float or on a tight line, and stay alert.
  — Keith Sutton, Outdoor Life, 18 June 2026
• Do your best to pick a time of day when your friend is likely sober and alert.
  — Harriette Cole, Mercury News, 25 June 2026
• Stay alert and follow the flow to avoid most of your troubles.
  — Chicago Tribune, 6 Jan. 2023
• Lugo was alert and able to walk off the field on his own power.
  — Jaylon Thompson, Kansas City Star, 11 June 2026
• The body interprets this as alert mode.
  — Mónica Heras, Vogue, 30 Dec. 2025
• Three more alert levels have been added to the coral reef alert system.
  — Elliana Hebert, CNN, 9 Feb. 2024
• Be alert in the mountains for mud, rocks, and debris in the road.
  — Ca Weather Bot, Sacbee.com, 26 Sep. 2025
• Mundruczó is more alert to the messiness than the emergence from it.
  — David Rooney, HollywoodReporter, 16 Feb. 2026
• In parks, alert staff or fellow walkers.
  — Lucy Notarantonio, MSNBC Newsweek, 21 Oct. 2025
• Use cool, bright light in the day to stay alert and warmer lamps in the evening to relax.
  — Shagun Khare, The Spruce, 15 Feb. 2026
• Karl Darlow was alert to the many loose balls which bounced through to him.
  — Beren Cross, New York Times, 16 Mar. 2026
• Don’t get distracted by your phone, but stay alert for what’s ahead.
  — Libby Monteith Minor, Southern Living, 4 Oct. 2025
• Bryant was plenty alert at that point, if tired, those in the room recall.
  — Luca Evans, Denver Post, 16 Jan. 2026
• The outlets said the boy was alert and conscious when he was brought back to shore.
  — Melina Khan, USA Today, 26 May 2026
• Be alert for stingrays and jellyfish.
  — Michael Salerno, AZCentral.com, 27 Aug. 2025

alert

2 of 3 noun

• Medical officials have put out an alert to hospitals to look out for the virus.
• They sounded an alert when enemy planes were approaching the city.
• The government has issued a terrorism alert.
• Set your alerts for last-minute deals and be ready to pounce.
  — David Hochman, Forbes.com, 5 June 2026
• This is our second trade alert of the week.
  — Jeff Marks, CNBC, 17 Mar. 2026
• The alert asks people to avoid the area.
  — Natalie Davies, Freep.com, 1 Apr. 2026
• Its presence put the area on high alert.
  — Stefan Becket, CBS News, 12 June 2026
• This tax season, don't wait for the alert.
  — Kurt Knutsson, FOXNews.com, 18 Feb. 2026
• To avoid missing out, sign up for the site’s deal alerts.
  — Jessica Chapel, Condé Nast Traveler, 7 Jan. 2026
• Get weather alerts via text What's next?
  — Doris Alvarez Cea, Florida Times-Union, 27 Jan. 2026
• There have been five added to the health alert in 2025.
  — Julia Gomez, USA Today, 13 Oct. 2025
• Health alerts to medical providers have slowed to a drip.
  — Pien Huang, NPR, 25 Mar. 2026
• Everyone is on high alert right now.
  — Zach Dean Outkick, FOXNews.com, 27 June 2026
• Police now say that alert has been cancelled.
  — Stephen Underwood, Hartford Courant, 9 May 2026
• In time, alerts were refined into three stages.
  — Patt Morrison, Los Angeles Times, 26 Mar. 2026
• This alert is in effect until noon.
  — Nc Weather Bot, Charlotte Observer, 5 Feb. 2026
• Account-change alerts can help flag takeover attempts.
  — Kurt Knutsson, FOXNews.com, 10 May 2026
• Thousands of people were placed on alert.
  — Anna Skinner, MSNBC Newsweek, 21 Oct. 2025
• No timely health alerts to doctors.
  — ABC News, 9 May 2026
• Pay attention to the alerts and keep an eye on your status.
  — Matthew Odam, Austin American Statesman, 21 Jan. 2026
• The alert is in effect on Friday.
  — Ca Weather Bot, Sacbee.com, 1 May 2026
• The alert is in effect on Sunday.
  — Ca Weather Bot, Sacbee.com, 9 May 2026
• The alert is in effect on Sunday.
  — Ca Weather Bot, Sacbee.com, 15 May 2026
• The alert is in effect on Sunday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 23 May 2026
• The alert is in effect on Friday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 28 May 2026
• The alert is in effect on Monday.
  — Ca Weather Bot, Sacbee.com, 10 May 2026
• The alert is in effect on Monday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 24 May 2026
• The alert is in effect on Monday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 31 May 2026
• The alert is in effect on Tuesday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 29 Sep. 2025
• The alert is in effect on Tuesday.
  — Star-Telegram Weather Bot, Fort Worth Star-Telegram, 6 Oct. 2025

alert

3 of 3 verb

• The teacher alerted the students that tests would be given the next day.
• The governor alerted island residents that a hurricane was coming.
• Several neighbors alerted the authorities when they noticed strangers acting suspiciously.
• House ants trail scents across the home to alert their colony.
  — Eva Flowe june 25, Charlotte Observer, 25 June 2026
• There must be somebody to alert.
  — Literary Hub, 29 Jan. 2026
• Some are even designed to alert you of fire or gas.
  — Bestreviews, Mercury News, 2 Mar. 2026
• This alerted the chef, who made a mad dash for the door.
  — Zackery Cuevas, PC Magazine, 9 June 2026
• There’s a bell that rings to alert you when your toast is about to pop up.
  — Bestreviews, Mercury News, 7 May 2026
• Mule deer, their perky ears alert, traipse across the two-lane state highway.
  — Lauren Villagran, USA Today, 1 Apr. 2026
• So what did the person do to alert bystanders?
  — Phaedra Trethan, USA Today, 4 Sep. 2025
• They were alerted to that scene by a neighbor.
  — Amanda Lee Myers, USA Today, 12 Feb. 2026
• Make noise to alert bears to your presence and travel in groups.
  — CBS News, 3 Oct. 2023
• Is there a chain of command things are alerted trains are stopped.
  — Jermont Terry, CBS News, 31 Mar. 2026
• Since then, Sadie has learned to alert Muse when there are changes in her body.
  — Jordan Greene, PEOPLE, 19 May 2026
• Some of the gravediggers are said to have alerted the police.
  — ABC News, 26 Mar. 2026
• The lights warn the driver right away and police are alerted.
  — CBS News, 27 Jan. 2026
• Neighbors alerted each other as the fire raged on their block.
  — Morgan Rynor, CBS News, 5 May 2026
• Pair that with an agent, and the system stops just alerting and starts acting.
  — Expert Panel®, Forbes.com, 1 June 2026
• If your goal is to alert the public, a public post can help more people see it.
  — Kurt Knutsson, FOXNews.com, 10 June 2026
• Fear alerts us to danger, while sadness tells us there’s something to mourn.
  — Juli Fraga, Time, 23 Sep. 2025
• The machine can’t even read it, yet still manages to alert the card’s owner.
  — Beandrea July, IndieWire, 28 Jan. 2026
• Howard’s daughter, who watches the show, alerted him to the name drop.
  — Jason P. Frank, Vulture, 25 Feb. 2026
• Schools are expected to alert families if there has been a case.
  — Nicole Villalpando, Austin American Statesman, 25 Feb. 2026
• The mother and her other son raced to the bridge and alerted police.
  — Justin Muszynski, Hartford Courant, 22 Jan. 2026
• The one that excites me most is the option to alert you to specific changes on a page.
  — Edward Mendelson, PC Magazine, 10 June 2026
• First responders were on the scene and alerting drivers to avoid the area.
  — Kendrick Calfee, Kansas City Star, 12 May 2026
• That would alert drivers to possibly slow down or be on their guard to prevent a wreck.
  — Chris Morris, Fortune, 7 Nov. 2023
• Witt talked with the Royals’ training staff to alert them of the injury.
  — Jaylon Thompson, Kansas City Star, 6 Sep. 2025
• The city plans to utilize its social media pages to alert the public of any changes.
  — Grace Hase, Mercury News, 5 Feb. 2026
• If tickets remain available for a show, fans will be alerted via email.
  — Greta Cross, USA Today, 3 Sep. 2025