adjective
1.
Synonyms: dead 1, asleep, cold, deceased, defunct, departed, exanimate, late, lifeless, unanimated
2.
that has died out altogether
an extinct civilization
Synonyms: bygone, dead, defunct, departed, gone, lost, vanished
Related Word: nonexistent; collapsed, fallen, overthrown; disappeared
Idioms: gone from the face of the earth
Contrasted words: existent, existing, living; active; contemporary, current
Antonyms: extant
3.
Synonyms: obsolete , dead, disused, outmoded, outworn, passé, superseded
Related Word: antiquated, archaic, old-fashioned
Contrasted words: modern; contemporary
Antonyms: current