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

Founded in 2022, The Alloy Market makes money by either refining unusable materials and taking a cut, or by listing usable items on their online resale marketplace. — Liz Knueven, CNBC, 23 Sep. 2026

That helped the operation keep switching infrastructure as domains became unusable. — Kurt Knutsson, FOXNews.com, 23 Sep. 2026

There’s a brief pause, and then my phone goes haywire, inundated with Bluetooth signal spam — new Airpods connections, contact requests, an avalanche of popups that make my phone basically unusable until Hedge shuts it off. — Jack Crosbie, Rolling Stone, 31 Aug. 2026

Phoenix Semiconductor engineers helped NAVAIR recover a supply of unusable legacy chips for a safety-critical system on the F/A-18 Super Hornet. — Aamir Khollam, Interesting Engineering, 28 Aug. 2026

Word History

First Known Use

1825, in the meaning defined above

Rhymes for unusable

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