What is the Latin word for extinct?

The usual Latin words for “extinct” are exstinguō, ignis, intereō; also dēficiō, pereō. The right choice depends on the sense; see the distinctions below.

English → Latin

“extinct” in Latin

exstinguōto quench, extinguish, put out; to destroy, kill, slay, abolish ignisfire; beacon, signal by fire intereōto go among, become lost in; to disappear, vanish; to be ruined, undone dēficiōto move away, leave, withdraw, break away; to be exhausted, run out, fail, run out, be wanting, fail, cease, disappear, pereōto perish, pass away, die, be ruined; to vanish, disappear, come to nothing; to leak; to be absorbed

The English word extinct itself goes back to Latin stinguō, through extīnctus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

extinct

exstinctus (e.g., ignis). To become extinct (as a family), vacuum fieri funeribus (Vid: Liv., 1, 46); interire: deficere: perire.

Quick answer

What is the Latin word for extinct?: The usual Latin words for “extinct” are exstinguō, ignis, intereō; also dēficiō, pereō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.