uncertain
adjective
un·cer·tain
ˌən-ˈsər-tᵊn 
1
3
: indefinite, indeterminate
the time of departure is uncertain
4
: not certain to occur : problematical
his success was uncertain
5
: not reliable : untrustworthy
an uncertain ally
uncertainly
adverb
Synonyms
Examples of uncertain in a Sentence
The time of departure is still uncertain.
We are still uncertain of the truth.
She remains uncertain about her plans.
I'm uncertain about how to respond.
The cause of the fire is uncertain.
He has an uncertain temper.
They face a financially uncertain future.
Recent Examples on the Web
Our data is optimistic, but the politics is uncertain.
—
James Morton Turner, Discover Magazine, 9 Nov. 2024
Even with a Republican Congress, some of this could prove difficult — and the potential fallout is uncertain at best.
—Carl Leubsdorf, The Mercury News, 7 Nov. 2024
So, what can parents do to model equanimity and grace in these very uncertain and high-pressure times?
—Chloe Schama, Vogue, 5 Nov. 2024
The fate of The Real Housewives of New Jersey’s season 15 is uncertain, star Dolores Catania said.
—Charna Flam, People.com, 5 Nov. 2024
See all Example Sentences for uncertain 
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James Morton Turner, Discover Magazine, 9 Nov. 2024
Even with a Republican Congress, some of this could prove difficult — and the potential fallout is uncertain at best.
—Carl Leubsdorf, The Mercury News, 7 Nov. 2024
So, what can parents do to model equanimity and grace in these very uncertain and high-pressure times?
—Chloe Schama, Vogue, 5 Nov. 2024
The fate of The Real Housewives of New Jersey’s season 15 is uncertain, star Dolores Catania said.
—Charna Flam, People.com, 5 Nov. 2024
See all Example Sentences for uncertain
Dictionary Entries Near uncertain
Cite this Entry
“Uncertain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncertain. Accessed 22 Nov. 2024.
Copy CitationKids Definition
uncertain
adjective
un·cer·tain
ˌən-ˈsərt-ᵊn
ˈən-
1
: not definite or fixed
an uncertain quantity
2
a
: not sure
uncertain of the truth
b
: not known for sure
an uncertain claim
3
: likely to change : not dependable
uncertain weather
uncertainly
adverb
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