English Reference

Word

defunct

Phoneticsde·funct

US/dɪˈfəŋkt/

UK/dɪfˈʌŋkt/

Definition

adj. no longer existing, living, or working. You use this to describe things like old companies, laws, or machines that are gone for good.

adj. no longer in existence, operation, or use. Often used to describe formal entities such as organisations, legal statutes, or technological systems that have been permanently discontinued.

Examples

“The old factory is now defunct.”

“After the merger, the original brand name became defunct and was replaced by a new corporate identity.”

“The researcher spent years documenting the grammar of a defunct language that had not been spoken natively for over a century, preserving its structure for future generations.”

Examples

simple

“The old factory is now defunct.”

contextual

“After the merger, the original brand name became defunct and was replaced by a new corporate identity.”

complex

“The researcher spent years documenting the grammar of a defunct language that had not been spoken natively for over a century, preserving its structure for future generations.”

Usage

Typically used predicatively after a linking verb or attributively before a noun to describe systems, laws, or organisations.

Real-World Examples

“We’re talking about the now defunct American agrochemicals giant Monsanto, which after the second world war cornered the market in, shall we say, controversial chemical innovations.”
The Guardian · 17 Aug 2026
“Ruteng Regional General Hospital's operating room, delivery room, pharmacy, and laboratory were all rendered defunct after the building's roof collapsed.”
BBC News · 17 Aug 2026

Etymology

Borrowed from Latin dēfunctus, past participle of dēfungor (“to finish, discharge”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domains

BusinessComputingLinguistics

This entry

Level
C1 · Advanced
Frequency
Frequent
Updated

Scan code

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English Reference