Synonyms of extinct

extinct

adjective

ik-ˈstiŋ(k)t 

as in defunct

no longer existing

a few overgrown ruins are all that remain of that once mighty but now extinct civilization

Synonyms & Similar Words

• defunct
• vanished
• gone
• expired
• obsolete
• done
• departed
• dead
• bygone
• faded
• fallen
• dying
• antiquated
• nonexistent
• nonextant
• moribund
• bypast
• collapsed
• lost
• terminated
• dated
• missing
• lapsed
• passé
• finished
• overthrown

Antonyms & Near Antonyms

• alive
• existing
• extant
• living
• active
• existent
• dynamic
• thriving
• vibrant

Example Sentences

Recent Examples of extinct

This crane had nearly gone extinct before, driven in part by an explosion of new hydroelectric dams in the early 20th century, whose construction dried out local wetlands. — Sara Herschander, Vox, 22 Oct. 2026

Additionally, Kay offers a fabulous shipping policy, excellent financing options, and some old-school retail perks that are seemingly extinct everywhere else. — Jessie Quinn, StyleCaster, 21 Oct. 2026

In 1987, biologists captured the last free-flying condor to transfer it to captivity, and the largest flying North American bird species was officially declared extinct in the wild. — David Ginsburg, The Conversation, 20 Oct. 2026

Lower and mid-tier bowl games might become extinct, although the six prominent bowls on and around New Year’s Day — Rose, Fiesta, Sugar, Orange, Cotton and Peach — should continue to host the CFP quarterfinals and semifinals. — Steve Henson, Los Angeles Times, 16 Oct. 2026