uncertainty

noun

un·​cer·​tain·​ty ˌən-ˈsər-tᵊn-tē How to pronounce uncertainty (audio)
1
: the quality or state of being uncertain : doubt
2
: something that is uncertain
Choose the Right Synonym for uncertainty

uncertainty, doubt, dubiety, skepticism, suspicion, mistrust mean lack of sureness about someone or something.

uncertainty may range from a falling short of certainty to an almost complete lack of conviction or knowledge especially about an outcome or result.

assumed the role of manager without hesitation or uncertainty

doubt suggests both uncertainty and inability to make a decision.

plagued by doubts as to what to do

dubiety stresses a wavering between conclusions.

felt some dubiety about its practicality

skepticism implies unwillingness to believe without conclusive evidence.

an economic forecast greeted with skepticism

suspicion stresses lack of faith in the truth, reality, fairness, or reliability of something or someone.

regarded the stranger with suspicion

mistrust implies a genuine doubt based upon suspicion.

had a great mistrust of doctors

Examples of uncertainty in a Sentence

There is some uncertainty about the company's future. He accepted the position without hesitation or uncertainty.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But investors are focusing very tightly on quality here, given recent uncertainty. Michael Foster, Forbes.com, 14 June 2025 The number of card games on the market surged while consumers tightened their wallets in response to economic uncertainty. Dr. Jenny Woo, CNBC, 14 June 2025 The Sun entered the 2025 WNBA season with uncertainty swirling around its future in Connecticut after its Mohegan Tribe ownership retained an investment bank to explore strategic financial options including selling the franchise. Emily Adams, Hartford Courant, 14 June 2025 Some uncertainty around the fish held him back from taking the lead. Buddha Lo, People.com, 13 June 2025 See All Example Sentences for uncertainty

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of uncertainty was in the 14th century

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Cite this Entry

“Uncertainty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uncertainty. Accessed 18 Jun. 2025.

Kids Definition

uncertainty

noun
un·​cer·​tain·​ty ˌən-ˈsərt-ᵊn-tē How to pronounce uncertainty (audio)
1
: lack of certainty
2
: something that is uncertain

More from Merriam-Webster on uncertainty

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