certainty
noun
cer·tain·ty
ˈsər-tᵊn-tē 
plural certainties
1
: something that is certain
2
: the quality or state of being certain especially on the basis of evidence
Examples of certainty in a Sentence
Scientists still do not know with any degree of certainty why the disease spread so quickly.
We cannot predict the outcome with absolute certainty.
There was no certainty that the package would arrive in time.
Her certainty about these complex moral issues is surprising.
Recent Examples on the Web
Markets continued to price in a near certainty for a Fed rate cut next week, and upped the odds for another in December, with just a 4% probability the central bank won't ease two more times before the end of the year, according to the CME Group's FedWatch.
—
Jeff Cox, CNBC, 24 Oct. 2025
Her certainty falters as the light from the mothership dims, the last traces of the hive connection dying above them.
—Jp Mangalindan, Time, 24 Oct. 2025
What the weather forecasters will say with more certainty is that fall appears to have finally arrived with overcast skies, daytime highs in the 50s and overnight lows in the 30s and 40s, and a smattering of rain, mostly on Wednesday and Thursday.
—Frank Witsil, Freep.com, 22 Oct. 2025
Today, members of our nation’s military, federal law enforcement, TSA and air traffic controllers are keeping us safe without the certainty of a paycheck.
—Kaitlyn Schallhorn, Oc Register, 21 Oct. 2025
See All Example Sentences for certainty
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Jeff Cox, CNBC, 24 Oct. 2025
Her certainty falters as the light from the mothership dims, the last traces of the hive connection dying above them.
—Jp Mangalindan, Time, 24 Oct. 2025
What the weather forecasters will say with more certainty is that fall appears to have finally arrived with overcast skies, daytime highs in the 50s and overnight lows in the 30s and 40s, and a smattering of rain, mostly on Wednesday and Thursday.
—Frank Witsil, Freep.com, 22 Oct. 2025
Today, members of our nation’s military, federal law enforcement, TSA and air traffic controllers are keeping us safe without the certainty of a paycheck.
—Kaitlyn Schallhorn, Oc Register, 21 Oct. 2025
See All Example Sentences for certainty
Cite this Entry
“Certainty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/certainty. Accessed 31 Oct. 2025.
Copy CitationKids Definition
certainty
noun
cer·tain·ty
ˈsərt-ᵊn-tē
plural certainties
1
: something certain
2
: the quality or state of being or feeling certain
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