sentinel

noun

ˈsent-nəl How to pronounce sentinel (audio)
Definition of sentinelnext
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

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of sentinel Dozens of health organizations and research groups have formed an independent surveillance network to track the presence of dangerous pathogens in community wastewater—a sentinel for potential outbreaks. — Lauren J. Young, Scientific American, 10 June 2026 Of all of them, the sentinel suites are undoubtedly one of my favorite places in the world. — Condé Nast, Condé Nast Traveler, 2 June 2026 Corkie putting the snake into the tub looks like the sentinels or the wire going into people’s pods. — Nick Newman, IndieWire, 1 June 2026 And for decades, billboards with Smart’s smiling face stood like sentinels along Highway 101, silently urging anyone with information to come forward. — Chelsea Bailey, CNN Money, 8 May 2026 See All Example Sentences for sentinel
Recent Examples of Synonyms for sentinel
  1. guardian
  2. guard
  3. custodian
  4. warden
  5. keeper
  6. sentry
Noun
  • The country has long had one of the world’s highest maternal mortality rates, now exacerbated by the Taliban’s ban on medical training for women and the requirement that women patients be accompanied to appointments by a male guardian.
    — The Week US, TheWeek, 31 Aug. 2026
  • Once an account is established, parents, guardians, grandparents and others can also contribute up to $5,000 per year until the year before the beneficiary turns 18.
    — Jessica Dickler, CNBC, 31 Aug. 2026
Definition of guardian
Noun
  • Patterson, who turns 27 on Tuesday, has experience at guard and center, and the 49ers needed a backup at both spots considering Toth’s lingering concussion symptoms.
    — Matt Barrows, New York Times, 31 Aug. 2026
  • So the first-year guard had to wait around and trust that his new team would figure out a way to get him in the door.
    — Tony East, Forbes.com, 30 Aug. 2026
Definition of guard
Noun
  • Every year Jim Evans faces the challenge of keeping health care costs reasonable for the more than 400 teachers, custodians and bus drivers at Concord Community Schools.
    — Alex Olgin, NPR, 26 Aug. 2026
  • Three men with very different vested interests across their roles as player, broadcaster and custodian.
    — Ben Jones Aug. 26, New York Times, 26 Aug. 2026
Definition of custodian
Noun
  • There is no word on when the search for a new warden will commence.
    — Christopher DeRose, CBS News, 20 Aug. 2026
  • But to Bill Donnelly, the service’s warden, New Jersey’s fire season, like North America’s, can feel unending.
    — Robert Sullivan, New Yorker, 17 Aug. 2026
Definition of warden
Noun
  • Allison Rugila, associate Sound keeper with Save the Sound, said that the presence of dolphins in the Long Island Sound points to both an ecological success story and a potential warning about the impacts of climate change.
    — Stephen Underwood, Hartford Courant, 31 Aug. 2026
  • Fans were still filing in, braving 90-degree heat with novelty beer swords in hand, as Maiava moved USC methodically down the field, punching in a one-yard keeper for an early score.
    — Ryan Kartje, Los Angeles Times, 29 Aug. 2026
Definition of keeper
Noun
  • The robot is also designed to perform sentry duties, including identifying personnel and issuing alerts when abnormal situations are detected.
    — Maria Mocerino, Interesting Engineering, 22 Aug. 2026
  • In humans, traits such as neuroticism and recklessness appear to have some evolutionary basis—emerging perhaps to provide our species with sentries who alerted us to threats, and with explorers who led the way to new food sources.
    — Vann R. Newkirk II, The Atlantic, 28 July 2026
Definition of sentry

Browse Nearby Words

sentiments
sentinel
sentinels
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Cite this Entry

“Sentinel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sentinel. Accessed 2 Sep. 2026.

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