Where does “subtera” come from?

subtera (Ido) comes from Ido tero, from Esperanto Tero, from French Terre, from Middle French terre, from Old French terre, from Latin Terra, from Proto-Indo-European ters- — dry.

subtera (Ido): subterranean, underground

Definitions

subterranean, underground

Ancestry of “subtera”, step by step

subtera traces back through 3 separate lines of ancestry.

via Ido tero

Step	Language	Word	Meaning
1	Ido	tero	earth
2	Esperanto	Tero	Earth
3	French	Terre	Earth; the Earth
4	Middle French	terre	earth; soil; land, property
5	Old French	terre	earth; soil; land, property
6	Latin	Terra	Terra goddess of the Earth
7	Proto-Indo-European	ters-	dry

via Esperanto subtera

Step	Language	Word	Meaning
1	Esperanto	subtera	underground
2	Esperanto	sub	under, below
3	Latin	sub	under, beneath; behind; at the feet of
4	Proto-Italic	supo	under
5	Proto-Indo-European	upó	under, below
6	Proto-Indo-European	h₃ewp-	—

via Ido sub

Step	Language	Word	Meaning
1	Ido	sub	under, below

Every word from Proto-Indo-European ters- →Every word from Latin Terra →Every word from Old French terre →