Subterranean Definition
sŭbtə-rānē-ən
adjective
Lying beneath the earth's surface; underground.
Webster's New World
Secret; hidden.
Webster's New World
noun
One who lives underground.
Webster's New World
Origin of Subterranean
-
Latin subterrāneus sub- sub- terra earth ters- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
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