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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Trainor played her whimsical older brother (who’s also her guardian), Spencer.—
Victoria Edel,
People.com,
27 May 2025
Noun
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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
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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
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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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 14 Jun. 2025.
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