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
Still, this may be an election where some of the certainties of the two-party system are rewritten.
—
Amy Davidson Sorkin, New Yorker, 17 May 2026
When clients clearly understand the value, risk mitigation and certainty embedded in each service tier, price sensitivity declines and trust in expertise becomes the primary driver of loyalty.
—Expert Panel®, Forbes.com, 15 May 2026
Wallace advises being suspicious of posts that project absolute certainty or confidence.
—Allison Parshall, Scientific American, 15 May 2026
Unfortunately, in life, there are few greater certainties than eventual statistical regression to the mean; the Broncos are primed for it, after winning an absurd amount of one-score games.
—Parker Gabriel, Denver Post, 15 May 2026
See All Example Sentences for certainty
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Amy Davidson Sorkin, New Yorker, 17 May 2026
When clients clearly understand the value, risk mitigation and certainty embedded in each service tier, price sensitivity declines and trust in expertise becomes the primary driver of loyalty.
—Expert Panel®, Forbes.com, 15 May 2026
Wallace advises being suspicious of posts that project absolute certainty or confidence.
—Allison Parshall, Scientific American, 15 May 2026
Unfortunately, in life, there are few greater certainties than eventual statistical regression to the mean; the Broncos are primed for it, after winning an absurd amount of one-score games.
—Parker Gabriel, Denver Post, 15 May 2026
See All Example Sentences for certainty
Cite this Entry
“Certainty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/certainty. Accessed 21 May. 2026.
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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