Subterrestrial synonyms | adjectives

Synonyms for Subterrestrial as an Adjective

• subterranean

  surface, underground
• hypogeal

  underground, surface
• hypogean

  underground, surface
• hypogeous

  underground, surface
• underground

  surface
• on the QT

  underground
• covert
• hush-hush
• private
• under wraps
• alternative
• avant-garde
• clandestine
• concealed
• experimental
• hidden
• radical
• resistant
• resistive
• revolutionary
• surreptitious
• unbowed
• unconventional
• undercover
• unusual
• on the sly
• buried
• sunken
• below ground
• covered
• underfoot
• in the recesses
• secret
• subversive
• deep
• lower-level
• basement