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

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

In Mexico the loss of territory discredited the country’s conservative government and left many of its citizens unsure of their country’s future as an independent state. —Encyclopedia Britannica, 10 Apr. 2026

For gamers unsure of what their system can do and want to play a certain game, that could be useful. —Jon Martindale, PC Magazine, 9 Apr. 2026

Authorities are unsure what happened to the fruits, according to Dilks. —Fernando Cervantes Jr, USA Today, 8 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