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 The observatory has spent over two decades as a sort of orbital sentinel that scans the cosmos for gamma-ray bursts, ready to quickly point itself at the short-lived — but insanely powerful — space explosions at a moment's notice. — Tariq Malik, Space.com, 26 June 2026 Meanwhile, in Ischia Ponte, the Castello Aragonese stands sentinel over a causeway that connects it to the rest of the island. — Laura Itzkowitz, Travel + Leisure, 24 June 2026 Here and there, fire, wind, and flood would have broken the forest into a mosaic of old and new, grass and forest, shrubs and sentinels. — Literary Hub, 10 June 2026 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 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
  • Officials said that parents and guardians may want to consider requesting a free credit freeze for their children who are under 16 to help prevent unauthorized accounts from being opened in the names of their children.
    — Howard Blume, Los Angeles Times, 17 Oct. 2026
  • ChatGPT is intended for users age 13 and older, and users under 18 need permission from a parent or guardian to use it, OpenAI said.
    — Marc Levy, Fortune, 17 Oct. 2026
Definition of guardian
Noun
  • The Hurricanes were missing a starting offensive lineman as right guard Max Buchanan is out for the foreseeable future with an injury.
    — Adam Lichtenstein, Sun Sentinel, 18 Oct. 2026
  • Officials reviewed the play for a possible hostile act by Howard, but assessed no foul on the Atlanta guard.
    — Dan Zaksheske OutKick, FOXNews.com, 18 Oct. 2026
Definition of guard
Noun
  • Some of the firm’s most successful investments included decentralized exchange Uniswap and crypto custodian Anchorage Digital.
    — Camila Grigera Naón, Fortune, 22 Oct. 2026
  • She’s worked as an evidence custodian, and then as a deputy, and has served in a variety of roles, like as a detective, crime scene evidence technician and field training officer.
    — Molly Morrow, Chicago Tribune, 22 Oct. 2026
Definition of custodian
Noun
  • Wasson, by contrast, kicks off by quoting three letters from prisoners in San Quentin, from 1947, addressed to the warden.
    — Anthony Lane, New Yorker, 19 Oct. 2026
  • Since the story blew up, the warden ordered at least two raids to confiscate anything brought in illegally, TMZ adds.
    — Madeleine Marr, Miami Herald, 19 Oct. 2026
Definition of warden
Noun
  • But on the next drive, his option keeper for a first down and block on Kenneth Walker’s touchdown run proved a strong response.
    — Blair Kerkhoff, Kansas City Star, 18 Oct. 2026
  • Jones flashed his decisiveness and speed on the ensuing play, gaining 14 yards on a quarterback keeper.
    — Edgar Thompson, The Orlando Sentinel, 18 Oct. 2026
Definition of keeper
Noun
  • Some of them have panoramic views of white windmills, which dot the coastline of the Taiwan Strait like slender sentries.
    — Gideon Lewis-Kraus, New Yorker, 19 Oct. 2026
  • And Ric Salinas, who plays Chachalacani, humorously obliges, bringing his Culture Clash vaudeville skills to the role of the sentry who’s caught between the rock of Klion’s tyranny and his fellow feeling for Antíkona’s sympathetic cause.
    — Theater Critic, Los Angeles Times, 11 Sep. 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 25 Oct. 2026.

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