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 of unusable

• 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

Our goal is to hire a seamstress who can re-create things for us from those unusable items. —Sandra Barrera, Daily News, 20 Mar. 2026

Controlled irrigation, pesticides and new fertilizers can turn once-unusable land into farms. —Arkansas Online, 19 Mar. 2026

If such satellites did collide, this could trigger a cascade of collisions that could render regions of Earth orbit temporarily unusable in a scenario called the Kessler syndrome. —Jonathan O'Callaghan, Scientific American, 17 Mar. 2026

But the tunnels would then be contaminated and unusable, and the team would need to be careful about its own safety. —Matthew Bunn, The Conversation, 17 Mar. 2026

Word History

First Known Use

1825, in the meaning defined above

Rhymes for unusable

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