unsure

adjective

un·​sure ˌən-ˈshu̇r How to pronounce unsure (audio)
-ˈshər
especially Southern -ˈshȯr
Synonyms of unsurenext
: not marked by or given to feelings of confident certainty : not sure
was unsure of what to do
see also:

Examples of unsure in a Sentence

unsure of her ability to handle the pressure of competing in the Olympic Games
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.
Eagle Rock was unsure what this season would bring. Justin Vigil Zuniga, Daily News, 28 May 2026 Many simply felt unsure about what to click next. Kurt Knutsson, FOXNews.com, 27 May 2026 In an environment where people are unsure where to start, change management is the critical foundation for envisioning new operating models and reinventing business processes. Peter Fitzgibbon, Forbes.com, 26 May 2026 At first, Pinkleton was unsure who could embody all of that and provide a new take on the role made famous by Tim Curry. Caitlin Huston, HollywoodReporter, 26 May 2026 See All Example Sentences for unsure

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of unsure was in the 15th century

Browse Nearby Words

Cite this Entry

“Unsure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsure. Accessed 5 Jun. 2026.

More from Merriam-Webster on unsure

Love words? Need even more definitions?

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

More from Merriam-Webster