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

The Army Corps removed debris on about two-thirds of homes that burned down, but the agency did not perform soil testing before and after the cleanup, leaving residents unsure about potential risks. —Evan Bush, NBC news, 20 May 2026

If unsure, test the soil pH because improper pH affects nutrient uptake. —Nadia Hassani, The Spruce, 19 May 2026

Harris was unsure how many people were evacuated, but the shelter set up by the Lake County Health Department at Sonju Arena in Two Harbors had six people stay overnight Friday. —Forum News Service, Twin Cities, 17 May 2026

Chinese officials were unsure what to make of Pete Hegseth’s presence — whether it was meant to convey a softer stance, a hardening one, or simply an ignorance of basic diplomatic protocol. —Los Angeles Times, 17 May 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