un·​sure | \ ˌən-ˈshu̇r How to pronounce unsure (audio) , -ˈshər, especially Southern -ˈshȯr\

Definition of unsure

: not marked by or given to feelings of confident certainty : not sure was unsure of what to do
unsure of oneself
: lacking confidence in one's abilities … he's a little unsure of himself when it comes to the music world …— Seth Mnookin

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Examples of unsure in a Sentence

Recent Examples on the Web

As many as 30% haven’t begun investing in smart technologies or are unsure of their plans. Angus Loten, WSJ, "Companies Take a Piecemeal Approach to Automation Tech," 4 Apr. 2019 But immigration attorneys say many others remain separated and unsure what will happen. Alan Gomez, USA TODAY, "4 things we don't know about family reunifications," 5 July 2018 Pope adds depth at a tailback spot where Seattle is unsure about the health of starter Chris Carson, who did not play in the second half last week due to a hip injury. Bob Condotta, The Seattle Times, "Seahawks add a cornerback and re-sign Troymaine Pope to practice squad while Bruce Irvin signs with Atlanta," 7 Nov. 2018 Authorities are unsure about where and when the couple were exposed to the nerve agent, but believe their illness may be collateral damage from the Skripal poisoning. Ciara Nugent, Time, "'There Will Be Severe Pain.' What to Know About the New Novichok Nerve Agent Poisoning in the U.K.," 5 July 2018 Getty Images Donald Trump, man who makes the final decisions about health care this country, is reportedly unsure about how HPV and HIV differ and asked Bill Gates to explain it to him. Danielle Mcnally, Marie Claire, "Apparently, Donald Trump Doesn't Know the Difference Between HPV and HIV," 18 May 2018 There are r eports saying Rob Gronkowski is unsure about playing this upcoming season too. Charles Curtis, For The Win, "The Patriots will be just fine ... right?," 18 Apr. 2018 Junior forward-center Nolan Gerrity was unsure about telling reporters his. Jonas Shaffer, baltimoresun.com, "Bittersweet 16: After dreams of another upset win crumble, UMBC left with memorable morsels," 19 Mar. 2018 Tipping is such a vague, subjective activity that ordinary Americans are unsure when to tip and when not to. Joe Queenan, WSJ, "A Few Rules for a World of Tipping Just About Everyone," 14 Feb. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unsure.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unsure

15th century, in the meaning defined above

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Statistics for unsure

Last Updated

4 May 2019

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Time Traveler for unsure

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

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More Definitions for unsure



English Language Learners Definition of unsure

: not certain about something : not sure

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More from Merriam-Webster on unsure

Rhyming Dictionary: Words that rhyme with unsure

Thesaurus: All synonyms and antonyms for unsure

Spanish Central: Translation of unsure

Nglish: Translation of unsure for Spanish Speakers

Britannica English: Translation of unsure for Arabic Speakers

Comments on unsure

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


to speak slightingly about or to degrade

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