unusable

adjective

un·​us·​able ˌən-ˈyü-zə-bəl 

: not capable of being used or fit for use : not usable

unusable documentary footage

The lavatory, totally unusable, was full of snow which had blasted in through the keyhole.

—Katharine Sim

unusably

ˌən-ˈyü-zə-blē 

adverb

Synonyms

• useless
• impractical
• unsuitable

Examples of unusable in a Sentence

a completely unusable gadget that's just taking up space in the drawer

Recent Examples on the Web

The website is almost unusable. —Matt Zoller Seitz, Vulture, 4 Sep. 2025

The process requires hundreds of delicate manual steps, and any contamination renders a dose unusable. —Jennifer Kite-Powell, Forbes.com, 31 Aug. 2025

Oswego High School also experienced standing water from the storms and is undergoing drying efforts, with portions of the gymnasium unusable for the immediate future, per the district website. —Molly Morrow, Chicago Tribune, 19 Aug. 2025

Turner said such a weapon could render low-Earth orbit unusable for satellites for as long as a year. —Dave Smith, Fortune, 18 Aug. 2025

Word History

First Known Use

1825, in the meaning defined above

Rhymes for unusable

• fusible
• usable
• diffusible
• excusable
• infusible
• reusable
• inexcusable