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
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of uncertain
Outside the church that morning the men’s suits were a pale, uncertain black.
—
Literary Hub, 7 May 2026
As the season comes to a close a sudden turn of events leaves their futures uncertain.
—Denise Petski, Deadline, 6 May 2026
The guidance states that potential harms in this age group, including false positives, psychological distress, overdiagnosis, overtreatment and radiation exposure, may outweigh the uncertain benefits of screening.
—Allison Palmer, Kansas City Star, 6 May 2026
Tariffs are playing a role in everything being uncertain, and also just gas prices.
—Dewayne Bevil, The Orlando Sentinel, 6 May 2026
See All Example Sentences for uncertain
Literary Hub, 7 May 2026
As the season comes to a close a sudden turn of events leaves their futures uncertain.
—Denise Petski, Deadline, 6 May 2026
The guidance states that potential harms in this age group, including false positives, psychological distress, overdiagnosis, overtreatment and radiation exposure, may outweigh the uncertain benefits of screening.
—Allison Palmer, Kansas City Star, 6 May 2026
Tariffs are playing a role in everything being uncertain, and also just gas prices.
—Dewayne Bevil, The Orlando Sentinel, 6 May 2026
See All Example Sentences for uncertain
Recent Examples of Synonyms for uncertain
Adjective
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Outperformance in the next decade won’t come from lower costs, but instead from the ability to keep operating when markets turn volatile.—
Victor Nian,
Fortune,
10 May 2026
-
It’s destined to be remembered as one of the most volatile and surprising political contests modern-day California has ever seen.—
Los Angeles Times,
Los Angeles Times,
10 May 2026
Adjective
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Like many students, Headley is now left in limbo, unsure how finals will be submitted or graded.—
Tori Mason,
CBS News,
8 May 2026
-
The Mets are unsure if his hip led to decreased velocity.—
Abbey Mastracco,
New York Daily News,
7 May 2026
Adjective
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Intercepting Mach 5 hypersonic weapons in space Hypersonic weapons, traveling at speeds of Mach 5 (five times the speed of sound) and above with unpredictable maneuvers, pose significant challenges to traditional missile defenses.—
Chris Young,
Interesting Engineering,
12 May 2026
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Prices are subject to rapid, unpredictable changes due to factors like, but not limited to, supply/demand, weather, and geopolitical events.—
USA TODAY,
USA Today,
12 May 2026
Adjective
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Everything everywhere all at once However, some analysts are skeptical about the ability of hyperscalers to maintain the current phenomenal capex figures into the future.—
Joseph Wilkins,
CNBC,
8 May 2026
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The women suffered the indignity of multiple interviews, intimate evidence gathering and skeptical lines of questioning from the police, among other things.—
Georg Szalai,
HollywoodReporter,
8 May 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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At the same time, police also noted suspicious behavior from McDermitt — including him mourning Fox's death on Facebook.—
Staff Author,
PEOPLE,
9 May 2026
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Agents were suspicious that Cruz would not have had enough time to reach the Lukeville Port of Entry to pick up passengers.—
Ryan Morik,
FOXNews.com,
9 May 2026
Adjective
-
An unstable ice block delayed Mount Everest’s climbing season until late April, yet around 464 climbers and their guides remain determined despite the danger and soaring permit costs.—
Binaj Gurubacharya,
Los Angeles Times,
7 May 2026
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While mixtures of two or three metals were messy and unstable, the five-metal combination paradoxically self-organized into a single, uniform product, streamlining 31 possible chemical outcomes into a single, precise nanocrystal.—
Mrigakshi Dixit,
Interesting Engineering,
7 May 2026
Adjective
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When that early foundation is delayed or inconsistent, the effects don’t stay confined to those first years.—
Tina Dello Russo,
Boston Herald,
10 May 2026
-
Why is the team suddenly playing stellar defense, after inconsistent performances all season?—
Louisa Thomas,
New Yorker,
10 May 2026
Cite this Entry
“Uncertain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/uncertain. Accessed 14 May. 2026.
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