Synonyms of extinct in English:

extinct


See US English definition of extinct

See UK English definition of extinct

See Spanish definition of extinto

adjective

1‘an extinct species’

SYNONYMS
vanished, lost, died out, dead, defunct, no longer existing, no longer extant, wiped out, destroyed, exterminated, gone
ANTONYMS

extant, living

2‘an extinct volcano’

SYNONYMS
inactive, old, former, no longer active
ANTONYMS

active, dormant