1
as in volatile
likely to change frequently, suddenly, or unexpectedly
the stifling heat would occasionally be relieved by an uncertain breeze
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in unsure
not feeling sure about the truth, wisdom, or trustworthiness of someone or something
never uncertain of her political beliefs or judgment, she was a decisive and fearless leader
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of uncertain
The bill's future in the Senate remains uncertain, with Republican leaders stopping short of committing to when — or how — the bill will reach the floor.
—
Kayla Gaskins, Baltimore Sun, 5 Feb. 2026
Brown Suga — run by sisters Ebony Paul-Harris and Asia Lockett (with lots of help from their mother Reva Paul) — was founded during the pandemic when Paul-Harris began baking to cope with uncertain times.
—Noelle Alviz-Gransee
february 4, Kansas City Star, 4 Feb. 2026
If a quantum state is very, very brief, then its energy can be highly uncertain.
—Clara Moskowitz, Scientific American, 4 Feb. 2026
But the Bucks have not come close to returning to the NBA Finals since winning the 2021 title, which is why the 31-year-old Antetokounmpo’s future is so uncertain ahead of Thursday afternoon’s NBA trade deadline.
—Peter Sblendorio, New York Daily News, 4 Feb. 2026
See All Example Sentences for uncertain
Kayla Gaskins, Baltimore Sun, 5 Feb. 2026
Brown Suga — run by sisters Ebony Paul-Harris and Asia Lockett (with lots of help from their mother Reva Paul) — was founded during the pandemic when Paul-Harris began baking to cope with uncertain times.
—Noelle Alviz-Gransee
february 4, Kansas City Star, 4 Feb. 2026
If a quantum state is very, very brief, then its energy can be highly uncertain.
—Clara Moskowitz, Scientific American, 4 Feb. 2026
But the Bucks have not come close to returning to the NBA Finals since winning the 2021 title, which is why the 31-year-old Antetokounmpo’s future is so uncertain ahead of Thursday afternoon’s NBA trade deadline.
—Peter Sblendorio, New York Daily News, 4 Feb. 2026
See All Example Sentences for uncertain
Recent Examples of Synonyms for uncertain
Adjective
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Michael Nagle | Bloomberg | Getty Images As stock markets continue to be volatile, investors looking for a stable income stream can bolster their portfolios with the addition of attractive dividend stocks.—
,
CNBC,
15 Feb. 2026
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Core inflation, which strips out volatile categories, was also right in line with expectations.—
Steve Kopack,
NBC news,
13 Feb. 2026
Adjective
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Changes to district lines weren’t always clearly communicated, and residents are understandably unsure about who represents them or how county decisions affect them now.—
Rachel Royster,
Fort Worth Star-Telegram,
14 Feb. 2026
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Police are unsure of her and Nava's whereabouts.—
Austin Turner,
CBS News,
14 Feb. 2026
Adjective
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This delay has raised concerns about the safety of robots, drones, and autonomous vehicles operating in unpredictable environments.—
Sujita Sinha,
Interesting Engineering,
11 Feb. 2026
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This is ideal for decades of sliding across the ice, because bigger mineral grains are more likely to get plucked out by the ice, leaving holes in the surface that could cause unpredictable behavior.—
Andrea Thompson,
Scientific American,
10 Feb. 2026
Adjective
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Overall, the five-member panel of justices appeared skeptical of the prosecution’s arguments on those points.—
Eric Levenson,
CNN Money,
11 Feb. 2026
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Some fans can get skeptical when their favorite artists incorporate more Christian-adjacent messaging in their music.—
Kyle Denis,
Billboard,
11 Feb. 2026
Adjective
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Rigorous, blustery winter; winding sleety spring; hot, moist enervating summer; changeful autumn with its dog-days; these are absolutely unknown.—
San Diego Union-Tribune,
San Diego Union-Tribune,
1 Jan. 2023
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Hers is the kind of face that inspires directors to tight framing — gleaming, as if smoothed from marble, and yet somehow pliant, changeful.—
Jordan Kisner Jack Davison,
New York Times,
11 Oct. 2022
Adjective
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The Pennsylvania State Police's fire marshal unit in Greensburg is offering a reward for information that leads to an arrest in connection with a suspicious fire in August.—
Erika Stanish,
CBS News,
14 Feb. 2026
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Clippers investigation Silver said he has been told the Clippers have been cooperative with the external investigation into their possible circumvention of the salary cap through a suspicious endorsement deal for Kawhi Leonard with a now-bankrupt company.—
Greg Beacham,
Los Angeles Times,
14 Feb. 2026
Adjective
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Studies show annual turnover among nursing assistants can approach 100%, and home care roles see turnover rates of around 75%, reflecting both burnout and unstable hours.—
Allie Canal,
NBC news,
13 Feb. 2026
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The Associated Press reported on February 9 that heavy snowfall and an unstable snowpack were the cause of most of the deaths.—
Owen Clarke,
Outside,
13 Feb. 2026
Adjective
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That approach is inconsistent with Texas law and unfair to taxpayers.—
Eleanor Dearman,
Fort Worth Star-Telegram,
14 Feb. 2026
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Tagovailoa got benched last year because of his inconsistent performance and lack of velocity on his throws.—
Omar Kelly,
Miami Herald,
13 Feb. 2026
Cite this Entry
“Uncertain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/uncertain. Accessed 16 Feb. 2026.
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