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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Moving beyond the initial cost of raising a child, higher education costs typically come prior to the parent/guardian retiring.—
David Kudla,
Forbes.com,
30 May 2025
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Those families are coming together and building relationships across language barriers, Castillo said — especially since parents and guardians often prefer hearing from each other rather than from the school.—
Maura Fox,
San Diego Union-Tribune,
27 May 2025
Noun
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But the tenor of the night, and perhaps Chicago’s season, changed abruptly as veteran Sky guard Courtney Vandersloot suffered a knee injury at the 5:29 minute mark of the first quarter on a drive to the basket.—
Ben Pickman,
New York Times,
8 June 2025
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For Sky veterans such as guard Ariel Atkins, the game — which drew a franchise record 19,496 fans — represented another breakthrough moment for a league experiencing meteoric growth in popularity.—
Julia Poe,
Chicago Tribune,
8 June 2025
Noun
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What Comes Next With Stitzel Reserve, the distillery is reaffirming its place not just as a producer, but as a custodian of bourbon legacy.—
Emily Price,
Forbes.com,
9 June 2025
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The 37,000 members of Local 3299 of the American Federation of State, County and Municipal Employees, include groundskeepers, custodians, MRI technologists and respiratory therapists.—
Pat Maio,
Oc Register,
8 June 2025
Noun
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The afternoon of June 3, the park said rangers and more than 30 wardens from the Maine Warden Service, found no trace of Tim and Esther Keiderling on Katahdin.—
Julia Marnin,
Miami Herald,
3 June 2025
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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
Noun
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Wyatt Kaiser is 22 and looks like a keeper.—
Mark Lazerus,
New York Times,
7 Apr. 2025
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Callender was back in his usual role as Inter Miami’s starting keeper on Sunday night against Toronto FC at Chase Stadium.—
Andre Fernandez,
Miami Herald,
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 17 Jun. 2025.
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