subterranean
Below ground, under the earth, underground.
Other meanings
secret, concealed.
Related words
- semisubterranean
- subterraneanity
- subterraneanly
- subterraneanness
- subterranean clover
Where this comes from
This definition is adapted from “subterranean” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.