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Definitions

extinct

[ik-stingkt] / ɪkˈstɪŋkt /
ADJECTIVE
dead, obsolete
Synonyms
WEAK
abolished archaic asleep bygone cold dead and gone deceased defunct departed disappeared done for doused ended exanimate exterminated extinguished fallen gone inactive late lifeless lost no longer known outmoded passed on passé snuffed out superseded terminated unknown vanished vanquished void wiped-out
Antonyms
WEAK
alive existing extant living

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 2015, the antelope suffered a mass die-off and it was feared that the Ice Age survivors would become extinct.

From BBC • Mar. 24, 2026

To place this species within the rhino family tree, Fraser and her team analyzed 57 other rhinocerotid species, most of which are extinct.

From Science Daily • Mar. 24, 2026

And if doubles are an endangered species, triples are practically extinct.

From The Wall Street Journal • Mar. 24, 2026

West Papua reveals two species that we thought were extinct.

From MarketWatch • Mar. 6, 2026

Altogether there are some ten thousand of these intrusively visible volcanoes on Earth, all but a few hundred of them extinct.

From "A Short History of Nearly Everything" by Bill Bryson

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.