extinct adj.
VERBS be | become, go | presume sth, think sth The species was presumed extinct.
ADV. completely, totally | all but, almost, nearly, practically, virtually The numbers of these animals have been falling steadily and they are now almost extinct.
adj.
an extinct species of fish
an extinct royal family
extinct laws and customs
an extinct volcano
threw his extinct cigarette into the stream
the fire is out