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
Each of the eight massive cabinets stood like giant yellow sentinels guarding the dancefloor.
—
Jeremy D. Larson, Pitchfork, 14 Aug. 2025
The previous study had shown that CLNP changed the behavior of dendritic cells, specialized immune cells that act as the immune system’s sentinels, initiating and regulating immune responses.
—New Atlas, 6 Aug. 2025
Vending machines line one wall, glowing sentinels filled with bags of junk food.
—Longreads, 8 July 2025
On the second largest of the seven remote islands, historic Fort Jefferson stands like a sentinel over the sand.
—Kara Franker, Southern Living, 19 June 2025
See All Example Sentences for sentinel
Jeremy D. Larson, Pitchfork, 14 Aug. 2025
The previous study had shown that CLNP changed the behavior of dendritic cells, specialized immune cells that act as the immune system’s sentinels, initiating and regulating immune responses.
—New Atlas, 6 Aug. 2025
Vending machines line one wall, glowing sentinels filled with bags of junk food.
—Longreads, 8 July 2025
On the second largest of the seven remote islands, historic Fort Jefferson stands like a sentinel over the sand.
—Kara Franker, Southern Living, 19 June 2025
See All Example Sentences for sentinel
Recent Examples of Synonyms for sentinel
Noun
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The United States has traditionally acted as the guardian of this system.—
John Kerry,
semafor.com,
6 Nov. 2025
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Kids aged 7 to 18 can also walk in for the shot without a prescription, as long as a parent or guardian gives consent and talks it over with the pharmacist.—
Evan Moore
November 5,
Charlotte Observer,
5 Nov. 2025
Noun
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Sports Equipment While the dishwasher isn't ideal for cleaning baseball caps, uniforms, or equipment heavily-coated with mud, a trip through a dishwasher cycle is ideal to remove bacteria and odors from mouth guards and hard plastic shin guards.—
Mary Marlowe Leverette,
The Spruce,
9 Jan. 2026
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The Hurricanes were without guard Gal Raviv, who is day-to-day with an upper-body injury.—
Arkansas Online,
Arkansas Online,
9 Jan. 2026
Noun
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Onuba counseled now is the time to take another page from PE, which is their operating partner model, where operating partners sit between management and assets, thereby becoming custodians for the post asset-value integration.—
Jennifer Weil,
Footwear News,
4 Nov. 2025
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Ahuja noted that institutional infrastructure for bitcoin—custodians, liquidity providers, and banks—has matured significantly over the past several years, creating greater stability.—
Sheryl Estrada,
Fortune,
4 Nov. 2025
Noun
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The newest season showed Renner's character Mike McLusky confronting a gang war and contending with a headstrong new warden, played by Falco.—
Madeline Bartos,
CBS News,
5 Jan. 2026
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Meanwhile, Nina Hobbs (Edie Falco), the season's new warden, is collapsing under the weight of her debt to the Colombians, who've forced her into doing their dirty work.—
Randall Colburn,
Entertainment Weekly,
28 Dec. 2025
Noun
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The team’s first four 2025 draft picks look like keepers.—
Zac Jackson,
New York Times,
5 Nov. 2025
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Orangutans sometimes spend weeks finding the necessary materials (wires, bolts, screws), hiding their elaborate preparations from their keepers, and awaiting the perfect moment to execute their plans.—
Ava Kofman,
New Yorker,
3 Nov. 2025
Noun
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The pair later designed pieces for various regiments of the Royal Guards, the sentries protecting Buckingham Palace and St James’s Palace in London.—
Oscar Holland,
CNN Money,
6 Nov. 2025
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Reenactors portraying British sentries were bum-rushed by a swarm of whooping Green Mountain Boys.—
Caity Weaver,
The Atlantic,
8 Oct. 2025
Cite this Entry
“Sentinel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sentinel. Accessed 10 Jan. 2026.
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