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as in reliable
not likely to fail a sure cure for the winter blues—a week in the Bahamas

Synonyms & Similar Words

Antonyms & Near Antonyms

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sure

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adverb

Synonym Chooser

How does the adjective sure contrast with its synonyms?

Some common synonyms of sure are certain, cocksure, and positive. While all these words mean "having no doubt or uncertainty," sure usually stresses the subjective or intuitive feeling of assurance.

felt sure that I had forgotten something

When is certain a more appropriate choice than sure?

In some situations, the words certain and sure are roughly equivalent. However, certain may apply to a basing of a conclusion or conviction on definite grounds or indubitable evidence.

police are certain about the cause of the fire

When would cocksure be a good substitute for sure?

The words cocksure and sure can be used in similar contexts, but cocksure implies presumptuous or careless positiveness.

you're always so cocksure about everything

Where would positive be a reasonable alternative to sure?

The synonyms positive and sure are sometimes interchangeable, but positive intensifies sureness or certainty and may imply opinionated conviction or forceful expression of it.

I'm positive that's the person I saw

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 sure
Adjective
This post contains details about the Yellowjackets, Season 3 episode ‘How the Story Ends’ With one week to go until what’s sure to be a jaw-dropping Season 3 finale of Yellowjackets, the Showtime series has claimed another fan-favorite. Glenn Garner, Deadline, 4 Apr. 2025 Not sure what a world-class shank is, but Damron rolled with it and produced one of the more memorable lines. Lee Habeeb, MSNBC Newsweek, 4 Apr. 2025
Adverb
Her Board of Governors Award from the ASC on February 22 sure had a valedictory feel to it. Christian Blauvelt, IndieWire, 25 Feb. 2025 And sure, some may call me dramatic and write this off as just a silly reality TV show about finding love sight unseen. Melanie Curry, refinery29.com, 17 Feb. 2025 See All Example Sentences for sure
Recent Examples of Synonyms for sure
Adjective
  • Good teams feel confident regardless of the day’s starting pitcher.
    Grant Brisbee, New York Times, 3 Apr. 2025
  • Jean looked confident and composed in dispatching the much more experienced Berkhamov.
    Trent Reinsmith, Forbes.com, 3 Apr. 2025
Adjective
  • The report concludes that no action is necessary from Devlin’s office, as the man suspected in Bailey’s killing, 35-year-old Cecil J. Mills, has already been arrested.
    Justin Muszynski, Hartford Courant, 1 Apr. 2025
  • Obviously, a body's oxygen demand increases with activity, so specific training is necessary to lengthen that skill.
    Skyler Caruso, People.com, 1 Apr. 2025
Adjective
  • Furthering its commitment to sustainable infrastructure, the company announced plans to expand its ultra-fast charging network internationally to help address the increasing demand for fast and reliable EV charging solutions.
    Lyubov Artemenko, Forbes.com, 4 Apr. 2025
  • Record sales have become a less reliable source of income for artists.
    Sara Chernikoff, USA Today, 4 Apr. 2025
Adjective
  • That may be true, but the IEA reports that sales actually continued to grow in the U.S. at greater than a 10% clip.
    Justin Worland, Time, 28 Mar. 2025
  • Arguing that the Smithsonian somehow misleads people, somehow is unpatriotic, somehow is saying things that are not true.
    Elizabeth Blair, NPR, 28 Mar. 2025
Adjective
  • Nor is there any conclusive evidence on dosing and timing for supplements.
    Sarah Anzlovar, MS, Verywell Health, 2 Apr. 2025
  • Stone, as he's done before without providing conclusive evidence, took aim at the Central Intelligence Agency.
    Lalee Ibssa, ABC News, 1 Apr. 2025
Adverb
  • Alanna is definitely in the running for my favorite overhauled show character.
    ArsTechnica, ArsTechnica, 28 Mar. 2025
  • But there’s definitely a part of me in all stages of him.
    Jamie Lang, Variety, 28 Mar. 2025
Adjective
  • Are there certain types of egg preparations that handle freezer storage better than others?
    Taylor Tobin, Southern Living, 29 Mar. 2025
  • As a woman, as a woman of color, and as a woman of a certain age, this is a testament to our ability.
    Erin Clack, People.com, 29 Mar. 2025
Adjective
  • Chinese President Xi Jinping has pledged that unification with the island is inevitable—through force if necessary.
    Jason D. Greenblatt, MSNBC Newsweek, 2 Apr. 2025
  • Areas Of Uncertainty While speculation is inevitable, leaders can take practical steps to position themselves to benefit from—or mitigate—the questions that lie ahead.
    John Ganem, Forbes.com, 2 Apr. 2025

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Cite this Entry

“Sure.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sure. Accessed 11 Apr. 2025.

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