defunct

[dih-fuhngkt] / dɪˈfʌŋkt /

ADJECTIVE

extinct, not functioning

Synonyms

STRONGEST

nonexistent obsolete vanished

WEAK

asleep bygone cold dead deceased departed done for down the drain exanimate expired gone had it inanimate inoperative invalid kaput late lifeless lost out of commission

Antonyms

WEAK

alive existent existing functioning live operating operative valid working

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.

There were separate concerns raised in the process about potential commercial conflicts of interest arising because of clients of Lord Mandelson's now defunct consulting firm Global Counsel.

From BBC • Jun. 1, 2026

Now, customers of the defunct budget carrier are mourning the sub-$100 plane ticket that has virtually disappeared.

From MarketWatch • May 6, 2026

Appealing to your credit-card company for tickets you won’t be able to use on a defunct airline will be your best line of defense.

From The Wall Street Journal • May 2, 2026

They included several sites in the capital Pyongyang, as well as public grounds such as defunct airfields, riverbanks, farmland and open-storage yards for mine waste.

From Barron's • Apr. 28, 2026

Soon, all three of us were decked out like walking advertisements for the defunct theme park.

From "The Lightning Thief" by Rick Riordan

Vocabulary lists containing defunct

300 Most Difficult "SAT" Words

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Grade 9, List 2

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The Lightning Thief

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