as in guardian
a person or group that watches over someone or something
a lone sentinel kept watch over the fort
Synonyms & Similar Words
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Example Sentences
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Recent Examples of sentinel
These physiological and sensory adaptations underpin the species’ ability to traverse vast ocean basins, from coastal foraging grounds to the depths of the White Shark Café, cementing their role as sentinels of both nearshore and open‑ocean ecosystems.
—
Scott Travers, Forbes.com, 26 Apr. 2025
The sentinels are currently being tested at Deep’s facility in Gloucestershire near Wales.
—Mack Degeurin, Popular Science, 5 Feb. 2025
In emerging outbreaks or bioterror events, animal illnesses have the potential to act as sentinels—the first to show signs of a disease—as well as be informative for understanding the geographic scope and severity of an event, Murphy explained.
—Ars Technica, 20 Jan. 2025
These range from oversized bats and undead soldiers to towering dragons and tree sentinels — basically a line-up of Elden Ring's greatest hits.
—Dan Perry, Newsweek, 13 Feb. 2025
See All Example Sentences for sentinel
Scott Travers, Forbes.com, 26 Apr. 2025
The sentinels are currently being tested at Deep’s facility in Gloucestershire near Wales.
—Mack Degeurin, Popular Science, 5 Feb. 2025
In emerging outbreaks or bioterror events, animal illnesses have the potential to act as sentinels—the first to show signs of a disease—as well as be informative for understanding the geographic scope and severity of an event, Murphy explained.
—Ars Technica, 20 Jan. 2025
These range from oversized bats and undead soldiers to towering dragons and tree sentinels — basically a line-up of Elden Ring's greatest hits.
—Dan Perry, Newsweek, 13 Feb. 2025
See All Example Sentences for sentinel
Recent Examples of Synonyms for sentinel
Noun
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Most rides have a family waiting area for parents or guardians to switch off with kids who either can’t or don’t want to ride.—
Eve Chen,
USA Today,
23 May 2025
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Calton hopes their story continues to challenge misconceptions about guardian breeds like the bullmastiff, showing the sweet, playful, and loyal sides of these gentle giants.—
Alice Gibbs,
MSNBC Newsweek,
20 May 2025
Noun
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Phoenix Mercury guard Diana Taurasi handles the ball during a WNBA basketball game against the Dallas Wings, Wednesday, June 7, 2023, in Arlington, Texas.—
Alex Kirschenbaum,
MSNBC Newsweek,
28 May 2025
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On the night of May 21, three armed security officers stood guard as the Jewish Community Relations Council of Greater Washington held its annual meeting in the nation’s capital.—
Andrew Lapin,
Sun Sentinel,
27 May 2025
Noun
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Work history, balances and identity stay with you, not employers or third-party custodians.—
Miguel Kudry,
Forbes.com,
28 May 2025
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Don and his mother were fixtures in the Post’s headquarters on Fifteenth Street; Don seemed to know everyone’s name—reporters, receptionists, custodians.—
Clare Malone,
New Yorker,
12 May 2025
Noun
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An associate warden at the prison said he was not authorized to speak to the media.—
Ames Alexander,
Charlotte Observer,
30 May 2025
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Purdy, known to her family as Bez Purdy, was loved by the Broomfield community and had been a church warden for 20 years before her untimely death, per the statement.—
Lesley Cosme Torres,
People.com,
27 May 2025
Noun
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Isabella’s a keeper with an assistant-manager title in the near future.—
Eddie Mouradian,
Vulture,
7 Apr. 2025
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Wyatt Kaiser is 22 and looks like a keeper.—
Mark Lazerus,
New York Times,
7 Apr. 2025
Noun
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The tree had long been a way marker and memory maker: a site of wedding proposals and remembrance ceremonies, a sentry in photos from one-in-a-lifetime family vacations, taped to fridges across the world.—
Amelia Nierenberg,
New York Times,
29 Apr. 2025
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Anduril makes everything from small drones to sentry towers used to police the U.S.-Mexico border systems to enable pilotless vehicles.—
William Hartung,
Forbes,
26 Dec. 2024
Cite this Entry
“Sentinel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sentinel. Accessed 5 Jun. 2025.
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