Where does “semiunderground” come from?

semiunderground (English) comes from English semi, from English semi-, from Latin sēmi-, from Proto-Indo-European sēmi — half; partially.

semiunderground (English): Partially underground

Definitions

  1. Partially underground

Ancestry of “semiunderground”, step by step

semiunderground traces back through two separate lines of ancestry.

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially

via English underground

StepLanguageWordMeaning
1EnglishundergroundBelow the ground; below the surface of the Earth;...
2Middle Englishundergrounde
Every word from Proto-Indo-European sēmi