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

Even though things are tense and unsure, there’s no indication that Vance or anyone else will lose more than their job. —Ronda Racha Penrice, HollywoodReporter, 31 Mar. 2026

In the early clips, Annie appears withdrawn and unsure of her surroundings. —Lucy Notarantonio, MSNBC Newsweek, 30 Mar. 2026

Travelers flying out of Detroit Metro Airport continued to arrive hours ahead of their flights Monday, unsure whether security lines would slow them down amid spring break travel and ongoing uncertainty over pay for Transportation Security Administration officers. —Hannah McIlree, CBS News, 30 Mar. 2026

Over time, though, the clarity of that governing brand faded as Democrats tried to address too many priorities at once, leaving voters unsure what the party stood for. —Richard Yanowitch, Mercury News, 26 Mar. 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