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 unsure of oneself

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.
Love the super-low rise, but unsure of the bootcut fit? Emma Greene, InStyle, 21 Jan. 2026 Crew members hesitated, unsure how to navigate the transition. Okla Jones, Essence, 20 Jan. 2026 Several callers said that there were at least two people inside but were unsure if there were more. David Ferrara, Cincinnati Enquirer, 18 Jan. 2026 Tommy is more confident than in season one, but still seems unsure. Jackie Strause, HollywoodReporter, 18 Jan. 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

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Cite this Entry

“Unsure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsure. Accessed 28 Jan. 2026.

More from Merriam-Webster on unsure

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