1
as in confident
having or showing a mind free from doubt
are you absolutely sure that she said she was coming today?
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in necessary
impossible to avoid or evade
the joke's a sure dud if you don't pause in the right places
Synonyms & Similar Words
Antonyms & Near Antonyms
3
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
4
as in true
worthy of one's trust
a sister is a sure friend for life
Synonyms & Similar Words
Antonyms & Near Antonyms
5
as in conclusive
not capable of being challenged or proved wrong
no sure evidence that life exists on other planets
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Antonyms & Near Antonyms
as in definitely
without any question
we sure could use your help here
Synonyms & Similar Words
1
as in certainty
a state of mind in which one is free from doubt
unfortunately, he lacked the sureness of his opponent in the tennis match
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in reliability
worthiness as the recipient of another's trust or confidence
investors in those risky foreign enterprises were gambling on the sureness of their instincts
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of sure
Sara Novak, Discover Magazine, 28 June 2025
Trump’s latest decision is also sure to be challenged, said lawyers challenging Trump’s decision to roll back TPS for Haitians in a federal lawsuit in New York.
—Jacqueline Charles, Miami Herald, 28 June 2025
Christian Allaire, Vogue, 27 May 2025
Of course, that’s a conversation for the fall (though the weather in Minneapolis and Detroit this week sure feels like playoff weather).
—Zack Meisel, New York Times, 22 May 2025
See All Example Sentences for sure
Adjective
Researchers aren’t completely sure why, though disease, competition, and other factors might have played a role.
—Sara Novak, Discover Magazine, 28 June 2025
Trump’s latest decision is also sure to be challenged, said lawyers challenging Trump’s decision to roll back TPS for Haitians in a federal lawsuit in New York.
—Jacqueline Charles, Miami Herald, 28 June 2025
Adverb
Designers in the high fashion world sure think so, too: Luxurious eyewear was all over the recent fall 2025 runways.
—Christian Allaire, Vogue, 27 May 2025
Of course, that’s a conversation for the fall (though the weather in Minneapolis and Detroit this week sure feels like playoff weather).
—Zack Meisel, New York Times, 22 May 2025
See All Example Sentences for sure
Recent Examples of Synonyms for sure
Adjective
-
From there, the team set about making Victor feel comfortable and confident as both a filmmaker and a performer.—
Mark Olsen,
Los Angeles Times,
26 June 2025
-
Actually, confident isn’t extreme enough of a word.—
Andy Swift,
TVLine,
26 June 2025
Adjective
-
Employees must continually understand their highest-level priorities and make necessary adjustments as needed.—
Tony Gambill,
Forbes.com,
24 June 2025
-
At that point, intravenous infusion of liquids, including electrolytes, multivitamins, glucose, and potassium, will be immediately necessary.—
Matthew Robinson,
MSNBC Newsweek,
24 June 2025
Adjective
-
As such, trees grown from seed provide a reliable and affordable (free) option for backyard growers.—
Kim Toscano,
Southern Living,
28 June 2025
-
Beyond simply offering a competent and reliable service, however, Lazarus knew that the repair process needed to be streamlined with a client-centric approach from start to finish.—
Victoria Gomelsky,
Robb Report,
27 June 2025
Adjective
-
Ever-so true to Telfar’s roots: community-driven, unpredictable, and built on radical accessibility.—
Karissa Mitchell,
Essence,
20 June 2025
-
Brown, the top returning rusher in the league (1,173 yards as a true freshman), will be running behind an offensive line that returns only one starter.—
Manny Navarro,
New York Times,
20 June 2025
Adjective
-
The series had a rather shocking ending, and in some ways, seemed pretty conclusive.—
Paul Tassi,
Forbes.com,
25 June 2025
-
Those observations proved less conclusive than had been hoped, but during the rest of the voyage, Cook was able to map the coastland of New Zealand before sailing west to the southeastern coast of Australia—the first record of Europeans on the continent's Eastern coastline.—
ArsTechnica,
ArsTechnica,
24 June 2025
Adverb
-
With today being the first official day of summer, things are definitely heating up.—
Okla Jones,
Essence,
20 June 2025
-
The Green Party candidate may have been responsible for Clinton losing in 2016 - and Ralph Nader was definitely responsible for Gore losing in 2000 (Nader won about 90K votes in Florida, most of which would have gone to Gore who lost state by fewer than 600 votes).—
Mandy Taheri,
MSNBC Newsweek,
20 June 2025
Noun
-
Finally, in this chronically complex and volatile world the temptation in the C-suite is to avoid communicating with stakeholders in the absence of certainty.—
Paul Laudicina,
Forbes.com,
23 June 2025
-
But in these times of economic volatility — first, a pandemic, then rampant inflation and now the uncertainty tied to trade policy in Washington, D.C. — there are few certainties in the business world.—
The Editorial Board,
Chicago Tribune,
23 June 2025
Noun
-
Limiting renewable energy development also raises concerns about electric reliability, says Heather Reams, president of Citizens for Responsible Energy Solutions, a right-of-center advocacy group.—
Michael Copley,
NPR,
27 June 2025
-
The aviation industry has long been cautious about innovation, a stance rooted in valid concerns around safety and reliability.—
Tanya Fileva,
Forbes.com,
27 June 2025
Cite this Entry
“Sure.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sure. Accessed 4 Jul. 2025.
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