Dictionary.com
Thesaurus.com
Synonyms

inoperable

American  
[in-op-er-uh-buhl, -op-ruh-buhl] / ɪnˈɒp ər ə bəl, -ˈɒp rə bəl /

adjective

  1. not operable or practicable.

  2. Medicine/Medical. not admitting of a surgical operation because the pathological condition is not amenable to cure by surgery or because of undue risk.


inoperable British  
/ -ˈɒprə-, ɪnˈɒpərəbəl /

adjective

  1. incapable of being implemented or operated; unworkable

  2. surgery not suitable for operation without risk, esp (of a malignant tumour) because metastasis has rendered surgery useless

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • inoperability noun
  • inoperably adverb

Etymology

Origin of inoperable

First recorded in 1885–90; in- 3 + operable

Explanation

An inoperable condition is one that can't be fixed through surgery. If someone's diagnosed with inoperable cancer, it means that an operation would not be helpful. Many kinds of cancer can be treated at least partly through surgery, but those that can't are inoperable. Another way to use this adjective is to mean "not working." If your computer is inoperable, it won't turn on, and if your fireplace is inoperable, you can't actually light a fire in it. Operable, "able to be used," comes from operate, which has a Latin root, operari, "to work." The prefix in- means "not."

Keep Reading on Vocabulary.com

Vocabulary lists containing inoperable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At night, after the bookstore closed, he, sometimes with the help of friends, pushed the inoperable vehicle into the lot at Quirky and slept in it.

From Slate • Mar. 25, 2026

His own health issues followed the death of his former bandmate Tom Parker, in 2022 at the age of 33, after he was diagnosed with an inoperable brain tumour.

From BBC • Feb. 27, 2026

New Start required the Navy to convert submarine missile tubes, making them inoperable.

From The Wall Street Journal • Feb. 15, 2026

The city’s parking enforcement and transportation officers were removed from the field over the weekend after copper wire thieves damaged a key communications tower in Elysian Park, leaving several departments with inoperable radios.

From Los Angeles Times • Dec. 29, 2025

Soon, with Gey anesthetized on the operating table, surgeons opened him up and found that the cancer was inoperable —growths covered his stomach, spleen, liver, and intestines.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot