What does extinct mean?
Extinct is an adjective describing something that has completely ceased to exist. Its most prominent use is biological: a species is extinct when its last living member has died, meaning the organism is gone permanently — as with the dodo or the woolly mammoth. The word also applies to volcanoes that will not erupt again, to fires and flames that have been put out, and, figuratively, to titles, families, languages, traditions, and practices that have died out with no continuation. It derives from Latin exstinguere, 'to extinguish,' which is why it shares roots with words like 'extinguish' — a species going extinct is, literally, a light being snuffed out. The term carries an air of finality: unlike 'endangered' or 'rare,' extinct allows no recovery. Its antonym is 'extant,' meaning still in existence, a pair often confused because the two words look similar but mean opposite things.
adjectiveNo longer in existence; having died out, especially referring to a species of animal or plant that has no living members. Also used of a volcano that is no longer active, a fire that has gone out, or a custom, title, or family line that has ended.
- (Of a species, family, or other group of organisms) having no living members; no longer in existence.
- (Of a volcano) no longer erupting and not expected to do so again.
- (Of a title, lineage, tradition, or practice) having died out; no longer continued.
- (Of a fire or flame) extinguished; no longer burning.
"The dodo has been extinct since the late seventeenth century."
"Dinosaurs became extinct roughly sixty-six million years ago."
"The village's ancient craft of bell-founding is now entirely extinct."
The word 'extinct' comes from the Latin for 'extinguished' — the same root as putting out a candle, applied to species snuffed out forever.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of extinct
Extinct comes from the Latin exstinctus, the past participle of exstinguere, meaning 'to extinguish' or 'to quench,' formed from ex- ('out') and stinguere ('to quench'). English adopted the word from Latin in the early modern period, around the fifteenth century. It shares this root with 'extinguish' and 'extinction,' and ultimately connects to the same Indo-European base that gave English 'sting.'
How extinct is actually used
Formal to neutral register. In scientific writing about species, 'went extinct' or 'became extinct' are preferred over the looser 'died out' in precise contexts. Applied figuratively to customs, skills, or ways of life, it carries a note of loss and finality. For volcanoes, 'extinct' implies no future eruption is expected, distinguishing it from 'dormant' (inactive but potentially able to erupt).
Easily confused with extinct
'Extant' means still in existence (the opposite of extinct), while 'extinct' means no longer existing.