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
There’s another important way that dogs can benefit the study of cancer—as environmental sentinels.
—Knowable Magazine, Smithsonian Magazine, 16 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
There’s another important way that dogs can benefit the study of cancer—as environmental sentinels.
—Knowable Magazine, Smithsonian Magazine, 16 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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Deanne Hullender, a spokesperson for the district, said 23,000 emails were sent to parents and guardians to inform them about the posters.—
Elizabeth Campbell,
Fort Worth Star-Telegram,
25 Sep. 2025
-
The Fidelity Youth Account can only be opened by a parent/guardian.—
Kelsey Neubauer,
CNBC,
25 Sep. 2025
Noun
-
The Sacramento Kings are bringing Terence Davis back for training camp two weeks after waiving the veteran guard.—
Jason Anderson,
Sacbee.com,
24 Sep. 2025
-
In the middle of 25th St, a man opens a red stanchion and ushers us toward a guard who stamps invisible ink on our wrists.—
Kieran Press-Reynolds,
Pitchfork,
24 Sep. 2025
Noun
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Law enforcement are exempt from the law, as well as custodians, maintenance workers, and those providing medical assistance.—
Abby Monteil,
Them.,
23 Sep. 2025
-
Egan quizzed the custodian on the relationship.—
Dan Kelly,
Kansas City Star,
21 Sep. 2025
Noun
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Henry's most cutting moment occurs when the warden asks the stuffy Brit how the prison tea is.—
Bryan Alexander,
USA Today,
18 Sep. 2025
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On the topic of Batel's connection to the Vezda and her ultimate role as a warden of these nefarious multidimensional creatures, Goldsman ties it back to sci-fi master Larry Niven.—
Jeff Spry,
Space.com,
18 Sep. 2025
Noun
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There have been a number of attacks by captive big cats in recent years, including a fatal tiger attack on a keeper at the Palm Beach Zoo in 2016 and another by a lion at a North California animal sanctuary in 2013.—
CNN.com Wire Service,
Mercury News,
22 Sep. 2025
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Ferree is the third-string keeper, but Bombino has started 22 times this season and Soma has come off the bench in the last four MLS games.—
Mark Zeigler,
San Diego Union-Tribune,
20 Sep. 2025
Noun
-
Aside from scouting, sending messages or sentry duty, some dogs were trained for direct combat.—
Vic Verbalaitis,
MSNBC Newsweek,
22 Aug. 2025
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Rows of lights stood like sentries above, adorned with flat visors that guided the glow onto the action.—
Adithi Ramakrishnan,
Twin Cities,
21 Aug. 2025
Cite this Entry
“Sentinel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sentinel. Accessed 29 Sep. 2025.
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