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
But the outcome at the end of a tumultuous week had been uncertain after Trump had insisted the deal include an increase in the government’s borrowing limit.
—
Lisa Mascaro, Los Angeles Times, 21 Dec. 2024
Details on how the berm area in question has evolved over the years through different rain and flood events and if there has been any reconstruction or repairs with a revolving board was uncertain.
—Andy Humbles, The Tennessean, 20 Dec. 2024
Snow mixed with sleet could fall in Minneapolis and southern Minnesota and in Wisconsin later in the afternoon, but the timing is uncertain.
—Gord Magill, Newsweek, 20 Dec. 2024
Even with Western aid, including a $50 billion G7 package, Ukraine's long-term economic stability is uncertain, especially if U.S. support wanes.
—Katya Soldak, Forbes, 20 Dec. 2024
See all Example Sentences for uncertain 
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Lisa Mascaro, Los Angeles Times, 21 Dec. 2024
Details on how the berm area in question has evolved over the years through different rain and flood events and if there has been any reconstruction or repairs with a revolving board was uncertain.
—Andy Humbles, The Tennessean, 20 Dec. 2024
Snow mixed with sleet could fall in Minneapolis and southern Minnesota and in Wisconsin later in the afternoon, but the timing is uncertain.
—Gord Magill, Newsweek, 20 Dec. 2024
Even with Western aid, including a $50 billion G7 package, Ukraine's long-term economic stability is uncertain, especially if U.S. support wanes.
—Katya Soldak, Forbes, 20 Dec. 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 26 Dec. 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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