Where does “subterraneanly” come from?

subterraneanly (English) comes from English subterranean, from Latin subterraneus, from Latin sub-, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

subterraneanly (English): In a subterranean manner

Definitions

  1. In a subterranean manner

Ancestry of “subterraneanly”, step by step

subterraneanly traces back through two separate lines of ancestry.

via English subterranean

StepLanguageWordMeaning
1Englishsubterraneanbelow ground, under the earth, underground
2Latinsubterraneusunderground, subterranean
3Latinsub-under, sub
4Proto-Indo-Europeanupóunder, below
5Proto-Indo-Europeanh₃ewp-

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Latin sub-