unsure

adjective

un·​sure ˌən-ˈshu̇r 

-ˈshər

especially Southern -ˈshȯr

: not marked by or given to feelings of confident certainty : not sure

was unsure of what to do

see also:

unsure of oneself

Synonyms of unsure

• skeptical
• suspicious
• uncertain
• doubtful

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

Looking unsure and a bit lost, VIPs from the Institute of Contemporary Art in Miami straggle into the dim underground garage of a nondescript Little Havana strip mall on a recent Saturday morning. —Andres Viglucci, Miami Herald, 17 Apr. 2026

Herd says this can leave some workers unsure how their performance is being evaluated. —Alyshia Hull, USA Today, 14 Apr. 2026

At the 2016 New York premiere of Bridget Jones's Baby (which sees Bridget Jones pregnant and unsure whether Mark Darcy or a new beau, played by Patrick Dempsey, is the father). —Alexandra Schonfeld, PEOPLE, 13 Apr. 2026

Mamdani's approval rating A Marist Poll published Wednesday revealed 48% of NYC residents think Mayor Mamdani is doing a good job so far, 30% disapprove of his performance, while 23% are unsure how to rate him. —Christina Fan, CBS News, 10 Apr. 2026

Word History

First Known Use

15th century, in the meaning defined above

Phrases Containing unsure

• unsure of oneself

Rhymes for unsure

• abjure
• adjure
• allure
• assure
• brochure
• cocksure
• coiffure
• contour
• couture
• demure
• detour
• endure