nonextant
Gone from existence
Nonextant means no longer existing or not currently in existence.
The term appears in academic and archival contexts to describe things that have been lost, destroyed, or never materialized: The nonextant manuscript is known only through references in other works.
It serves as a more formal alternative to "lost" or "missing" when discussing historical documents, species, or artifacts.
Ceased to exist visibly
- evaporatedConverted to gas
- dissolvedDispersed into solvent
- dematerializedCeased to exist physically
- erasedRemoved by rubbing
faded · dissipated · vaporized · sublimated · lost civilization · Atlantis · wiped out · obliterated
No longer in use
- antiquatedOld and outdated
- deprecatedFormally advised against using
- defunctNo longer existing
- disusedNo longer in operation
superseded · phased-out · discontinued · mothballed · outmoded · superannuated · anachronistic · legacy
Extinct Mesozoic reptile
- dodoVanished flightless bird
- mammothExtinct elephant with curved tusks
- trilobiteExtinct segmented marine arthropod
- pterodactylExtinct flying reptile
sabertooth · megafauna · archaeopteryx · thylacine · passenger pigeon · aurochs · quagga · moa
Existing only in thought
- fictionalNot real, invented
- mythicalOf folklore, not fact
- legendaryFamous beyond ordinary measure
- never-wasOne who failed entirely
invented · fabricated · made-up · fantastical · apocryphal · spurious · conjectural · theoretical
Impossible to regain
- irreversibleCannot be undone
- unrestorableCannot be returned to original
- unsalvageableImpossible to recover
- irreparableCannot be fixed
irremediable · permanent · beyond recall · unrecoverable · irreclaimable · unredeemable · destroyed · ruined
disappeared
Ceased to exist visibly
- evaporatedConverted to gas
- dissolvedDispersed into solvent
- dematerializedCeased to exist physically
erased · faded · dissipated · vaporized · sublimated · lost civilization · Atlantis · wiped out · obliterated · expunged
outdated
No longer in use
- antiquatedOld and outdated
- deprecatedFormally advised against using
- defunctNo longer existing
disused · superseded · phased-out · discontinued · mothballed · outmoded · superannuated · anachronistic · legacy · abandoned
dinosaur
Extinct Mesozoic reptile
- dodoVanished flightless bird
- mammothExtinct elephant with curved tusks
- trilobiteExtinct segmented marine arthropod
pterodactyl · sabertooth · megafauna · archaeopteryx · thylacine · passenger pigeon · aurochs · quagga · moa · fossilized
imaginary
Existing only in thought
never-was · invented · fabricated · made-up · fantastical · apocryphal · spurious · conjectural · theoretical · supposed
irretrievable
Impossible to regain
- irreversibleCannot be undone
- unrestorableCannot be returned to original
- unsalvageableImpossible to recover
irreparable · irremediable · permanent · beyond recall · unrecoverable · irreclaimable · unredeemable · destroyed · ruined