UNCERTAINTY Synonyms: 37 Similar and Opposite Words

Q: How does the noun 'uncertainty' differ from other similar words?

Some common synonyms of uncertainty are doubt , dubiety , mistrust , skepticism , and suspicion . While all these words 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

Q: When could 'doubt' be used to replace 'uncertainty'?

The words doubt and uncertainty are synonyms, but do differ in nuance. Specifically, doubt suggests both uncertainty and inability to make a decision. // plagued by doubts as to what to do

Q: Where would 'dubiety' be a reasonable alternative to 'uncertainty'?

Although the words dubiety and uncertainty have much in common, dubiety stresses a wavering between conclusions. // felt some dubiety about its practicality

Q: When might 'mistrust' be a better fit than 'uncertainty'?

While in some cases nearly identical to uncertainty , mistrust implies a genuine doubt based upon suspicion. // had a great mistrust of doctors

Q: When would 'skepticism' be a good substitute for 'uncertainty'?

While the synonyms skepticism and uncertainty are close in meaning, skepticism implies unwillingness to believe without conclusive evidence. // an economic forecast greeted with skepticism

Q: In what contexts can 'suspicion' take the place of 'uncertainty'?

The synonyms suspicion and uncertainty are sometimes interchangeable, but suspicion stresses lack of faith in the truth, reality, fairness, or reliability of something or someone. // regarded the stranger with suspicion

uncertainty

noun

ˌən-ˈsər-tᵊn-tē

Definition of uncertainty next

as in doubt

a feeling or attitude that one does not know the truth, truthfulness, or trustworthiness of someone or something uncertainty about her job prospects has her worried

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How does the noun uncertainty differ from other similar words?

Some common synonyms of uncertainty are doubt, dubiety, mistrust, skepticism, and suspicion. While all these words 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

When could doubt be used to replace uncertainty?

The words doubt and uncertainty are synonyms, but do differ in nuance. Specifically, doubt suggests both uncertainty and inability to make a decision.

plagued by doubts as to what to do

Where would dubiety be a reasonable alternative to uncertainty?

Although the words dubiety and uncertainty have much in common, dubiety stresses a wavering between conclusions.

felt some dubiety about its practicality

When might mistrust be a better fit than uncertainty?

While in some cases nearly identical to uncertainty, mistrust implies a genuine doubt based upon suspicion.

had a great mistrust of doctors

When would skepticism be a good substitute for uncertainty?

While the synonyms skepticism and uncertainty are close in meaning, skepticism implies unwillingness to believe without conclusive evidence.

an economic forecast greeted with skepticism

In what contexts can suspicion take the place of uncertainty?

The synonyms suspicion and uncertainty are sometimes interchangeable, but suspicion stresses lack of faith in the truth, reality, fairness, or reliability of something or someone.

regarded the stranger with suspicion

Example Sentences

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.

Recent Examples of uncertainty Stock prices moved in the opposite direction of oil prices, which have been twitchy because of uncertainty about how long the Iran war will keep the Strait of Hormuz closed and prevent oil tankers from delivering crude. —

Stan Choe, Los Angeles Times, 18 May 2026 What Economic Uncertainty Requires Persistent economic uncertainty has emphasized the necessity for focused growth plans. —

Raheel Sheikh, Forbes.com, 18 May 2026 Against this climate of business uncertainty, which seems be growing as the year progresses, the ICSC trade organization stages its largest event of the year — ICSC Las Vegas — Monday through Wednesday. —

David Moin, Footwear News, 18 May 2026 The latest escalation in the Middle East has once again thrown global travel into uncertainty, with knock-on effects felt far beyond the region itself. —

Sarah Allard, Condé Nast Traveler, 18 May 2026 See All Example Sentences for uncertainty

Recent Examples of Synonyms for uncertainty

Noun

The election drubbing cemented doubts among many Labor lawmakers about Starmer’s judgment, vision and leadership ability — a brutal indictment on a leader who returned the party to power in July 2024 after 14 years in opposition.

— Danica Kirka, Los Angeles Times, 14 May 2026
When in doubt, turn to Dries Van Noten’s polka-dot-print pareo.

— Laura Jackson, Vogue, 14 May 2026

Definition of doubt

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uncertainties

uncertainty

unchain

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“Uncertainty.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/uncertainty. Accessed 20 May. 2026.

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Synonyms of uncertainty

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