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.
The weather service remains unsure when that surge will move through the region or how much rain will fall. Rick Hurd, Mercury News, 10 Feb. 2026 Its dilemma seems to be that it is abandoned, alone, and unsure of how to exist in a vast, empty scrubland, which sits at the edge of a void. Zachary Fine, New Yorker, 9 Feb. 2026 Footage captures the chaotic initial response, with officers unsure if the shooter remained in the building and frantically searching for victims. Kimberlee Kruesi, Los Angeles Times, 9 Feb. 2026 This study, put together by Sport England’s This Girl Can campaign, shows almost a third of pregnant people worry about harming their baby through exercise, and 24% feel unsure about what’s actually safe. Hannah Silverman, Parents, 8 Feb. 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 15 Feb. 2026.

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