Where does “ὑπόγαιος” come from?

ὑπόγαιος (Ancient Greek) comes from Ancient Greek ὑπό, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “ὑπόγαιος”, step by step

ὑπόγαιος traces back through two separate lines of ancestry.

via Ancient Greek ὑπό

StepLanguageWordMeaning
1Ancient Greekὑπό
2Proto-Indo-Europeanupóunder, below
3Proto-Indo-Europeanh₃ewp-—

via Ancient Greek γαῖα

StepLanguageWordMeaning
1Ancient Greekγαῖαland, country; earth; the Earth

Words derived from “ὑπόγαιος”

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Ancient Greek ὑπό →