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
Whether Hamas will fully comply remains uncertain, putting the fragile truce at risk.
—
Efrat Lachter, Fox News, 1 Feb. 2025
The ban, however, was short-lived, and hours later, incoming President Donald Trump overturned it, giving TikTok a temporary reprieve—but its future still remains uncertain.
—Daniel R. Depetris, Newsweek, 1 Feb. 2025
But its future is uncertain, as the Illinois Flag Commission is a few weeks away from choosing a winner in a contest to design a new flag to represent the Land of Lincoln — although the outcome will be advisory at best.
—Addison Wright, Chicago Tribune, 31 Jan. 2025
Where that would lead him is uncertain, but with either his soccer talents or the nest egg of money he’s saved from Hollywood funding his college education, Eggerling is unusually well prepared for the next act.
—Kevin Baxter, Los Angeles Times, 31 Jan. 2025
See all Example Sentences for uncertain 
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Efrat Lachter, Fox News, 1 Feb. 2025
The ban, however, was short-lived, and hours later, incoming President Donald Trump overturned it, giving TikTok a temporary reprieve—but its future still remains uncertain.
—Daniel R. Depetris, Newsweek, 1 Feb. 2025
But its future is uncertain, as the Illinois Flag Commission is a few weeks away from choosing a winner in a contest to design a new flag to represent the Land of Lincoln — although the outcome will be advisory at best.
—Addison Wright, Chicago Tribune, 31 Jan. 2025
Where that would lead him is uncertain, but with either his soccer talents or the nest egg of money he’s saved from Hollywood funding his college education, Eggerling is unusually well prepared for the next act.
—Kevin Baxter, Los Angeles Times, 31 Jan. 2025
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 4 Feb. 2025.
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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