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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
Not sure what to slip on your feet when wearing flouncy short-sleeve dresses and wide-leg pants? Izzy Baskette, People.com, 29 Apr. 2025 Other experts aren’t so sure about the link between HPV and heart disease. Liz Szabo, Scientific American, 29 Apr. 2025
Adverb
But the Little Monsters fan base sure got its money’s worth, with a show that managed — in truest Gaga fashion — to be equal parts bizarro and sentimental. Chris Willman, Variety, 12 Apr. 2025 Jokes aside, this Phillies team sure looks to have a higher ceiling than the one that fell two wins shy of the championship. Tim Britton, The Athletic, 25 Mar. 2025 See All Example Sentences for sure
Recent Examples of Synonyms for sure
Adjective
  • And over the opening month of this season, Yamamoto’s confident mound presence has been mirrored behind the scenes, the pitcher becoming more vocal in game-planning meetings and assured in his clubhouse demeanor.
    Jack Harris, Los Angeles Times, 27 Apr. 2025
  • Both Roseman and Sirianni were confident that Mukuba could deliver the same blows in the NFL despite being undersized.
    Brooks Kubena, New York Times, 26 Apr. 2025
Adjective
  • The laws are seen by the administration as a necessary protection against threats to the country, a betrayal of the principles and virtues of the nation by the opposition and the public at large.
    Liz Tracey, JSTOR Daily, 25 Apr. 2025
  • Though this is promising, additional evidence is necessary to confirm the potential role peptides may play in protection against sun damage.13 3.
    Cristina Mutchler, Verywell Health, 25 Apr. 2025
Adjective
  • Over the next decade his signature kung-fu comedy style blending bold stunts and easy-going charisma became a reliable box-office draw for Hong Kong’s now legendary Golden Harvest studio.
    Nick Vivarelli, Variety, 29 Apr. 2025
  • The only solution with the current state of the Dodgers is a blockbuster trade for a reliable pitcher to bolster their rotation.
    Mohammed Soliman, MSNBC Newsweek, 29 Apr. 2025
Adjective
  • Francis hailed as 'true advocate for peace' In 2019, Francis became the first pontiff to set foot on the peninsula where Islam was born.
    N'dea Yancey-Bragg, USA Today, 22 Apr. 2025
  • Walker will likely need time to develop in the right system, and the Raiders should wait until later to take a true off-ball linebacker.
    Nicholas Creel, MSNBC Newsweek, 21 Apr. 2025
Adjective
  • Estimates of people with other arrhythmias are less conclusive, but in general, people with arrhythmias are at higher risk of having heart attacks or strokes and dying early, Pell said.
    Kristen Rogers, CNN Money, 17 Apr. 2025
  • While some studies have found potential associations—often at higher-than-recommended levels—experts caution that the evidence is mixed and not conclusive.
    Gordon G. Chang, MSNBC Newsweek, 7 Apr. 2025
Adverb
  • While history is definitely a hallmark of this quaint riverfront community, it is also known for gorgeous state parks and outdoor attractions, a lively arts and culture scene, and excellent local downtown shopping.
    Tara Massouleh McCay, Southern Living, 21 Apr. 2025
  • Watching that film with the context of this series definitely helps make Cassian's entire story feel complete.
    DeVonne Goode, Parents, 21 Apr. 2025
Adjective
  • In the last two weeks, Trump issued an executive order directing agencies to sunset every existing energy regulation by next year and, in a separate memorandum, said those agencies may repeal certain regulations without allowing the public to weigh in.
    Nichola Groom and Valerie Volcovici, USA Today, 23 Apr. 2025
  • Then again, certain positions that were once universal, or at least bipartisan, appear to be breaking down: the opposition to child labor, for one.
    E. Tammy Kim, New Yorker, 22 Apr. 2025
Adjective
  • Mona Sunset and Natural Runner Runners are great for hallways and kitchens where messes are inevitable.
    Shea Simmons, Southern Living, 26 Apr. 2025
  • But, after Stroitel’s inevitable withdrawal from the 1986 KFK, attempts were eventually made to keep the club going.
    Richard Sutcliffe, New York Times, 26 Apr. 2025

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Cite this Entry

“Sure.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sure. Accessed 5 May. 2025.

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