un·​sure | \ˌən-ˈshu̇r, -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

Keep scrolling for more

Examples of unsure in a Sentence

Recent Examples on the Web

Under McKinsey’s agreement with Eskom, Ms. Goodson’s company was supposed to provide consulting support, but with only two employees was unsure how to do that. New York Times, "How McKinsey Lost Its Way in South Africa," 26 June 2018 The claim comes as Donnarumma's future remains unsure, despite the young goalkeeper signing a new contract last season after long negotiations. SI.com, "Gianluigi Donnarumma Could Spend His Entire Career at Milan, According to Agent Raiola," 30 May 2018 City officials remain unsure whether the victim, who walked away from the truck without being treated or questioned, was a man or woman. Jeff Mcdonald, sandiegouniontribune.com, "City official who was fired after near-fatal garbage-truck incident back on San Diego payroll," 3 Apr. 2018 Officials are unsure of when Sleeping Giant will reopen. Gregory B. Hladky, courant.com, "'Unfortunately, Mother Nature Took It Away.' Sleeping Giant State Park Remains Unrecognizable As Storm Cleanup Continues," 11 July 2018 Meanwhile, legislators still seem unsure about compromise. Jonathan Lai, Philly.com, "Pa. redistricting reform not dead … but close to it," 26 June 2018 Tammy Malphurs, spokeswoman for Volusia County Beach Safety, was unsure of the highest number of stings, but said the weekend was not the most the beaches have ever seen. Amanda Watts, CNN, "More than 800 people were stung by jellyfish along Florida beaches in three days," 13 June 2018 Router owners who are unsure how to respond should contact their manufacturer, or, if the device is more than a few years old, buy a new one. Dan Goodin, Ars Technica, "VPNFilter malware infecting 500,000 devices is worse than we thought," 6 June 2018 Among those who responded to a recent survey in the Phillipian, the weekly student newspaper, 14 percent identify as gay, bisexual, or unsure, and Andover employs an official LGBT Advisor. Richard Mcgill Murphy, Town & Country, "How John Palfrey Is Bringing America's Most Elite Boarding School Into the Digital Age," 7 July 2015

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.

See More

First Known Use of unsure

15th century, in the meaning defined above

Keep scrolling for more

Learn More about unsure

Statistics for unsure

Last Updated

16 Nov 2018

Look-up Popularity

Time Traveler for unsure

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

See more words from the same century

Keep scrolling for more

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).


noxious or harmful

Get Word of the Day daily email!

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a-traditional-thanksgiving-dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?


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!