Synonyms & Antonyms of uncertainty

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

Synonyms for uncertainty

Words Related to uncertainty

Near Antonyms for uncertainty

Antonyms for uncertainty

See the Dictionary Definition 

Frequently Asked Questions About uncertainty

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

Keep scrolling for more

Learn More about uncertainty

Time Traveler for uncertainty

Time Traveler

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

See more words from the same century

Cite this Entry

“Uncertainty.” Thesaurus, Merriam-Webster, Accessed 27 Sep. 2020.

Keep scrolling for more

More from Merriam-Webster on uncertainty

Dictionary: Definition of uncertainty

Nglish: Translation of uncertainty for Spanish Speakers

Britannica English: Translation of uncertainty for Arabic Speakers

Comments on uncertainty

What made you want to look up uncertainty? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!