Etymograph

English

pseudoextinct

From pseudo- + extinct.

Formed from pseudo- + extinct

Ancient Greek ψεύδω ‘to lie’

Ancient Greek ψευδής ‘false, lying’

English pseudo-

Proto-Indo-European *stengʷ- ‘to push’

Latin stinguō ‘to extinguish, put out, quench’

Latin exstinguō ‘to extinguish, put out, quench’

Latin extīnctus ‘extinguished, quenched’

Middle English extinct ‘eliminated, eradicated, extinguished’

English extinct

Today it means

adj extinct, but with members of a daughter species remaining alive

Sources

Sources: Wiktionary, “pseudoextinct”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / pseudoextinct