Defunct means no longer existing or working. A defunct company, now defunct, a defunct law.
It belongs to institutions, companies and machines rather than to people, though the Latin behind it means having finished with life. Now defunct is the standard parenthesis in writing about anything that has since folded.
1adjectivedefunctNo longer existing or working.
“The old railway line has been defunct since the 1960s.”
defunct is a state.
Latin defunctus means having finished, from defungi, to discharge or complete.
Proto-Indo-European
*bʰewg-
Latin
dēfunctus
English, today
defunct
Built from
Borrowed from Latin dēfunctus, past participle of dēfungor (“to finish, discharge”).
Etymology from Wiktionary, CC BY-SA