subterraneous
(sub-ter-ra-ne-ous)
5 syllables
Definition
adjective. 1 situated living or operating below the surface of the earth 2 existing or operating in concealment
Example Sentence
The traitor was led down to the castle's subterraneous prison.
Synonyms
underground; subsurface; below ground
Antonyms
Hear It! Say It! Write It!
subterraneous