Definitions
lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)
Word origin
From Latin subterrāneus + -an. Compare subterrane and subterraneous.
Used in a sentence
“And you were in the parking lot / Subterranean by your own design”
“Today is that most sacred of American holidays. A day when people from all walks of life set aside their differences and focus their undivided attention on the prognostication abilities of a subterranean rodent.”
“The subterranean tool of buying rigged opinion polling and media coverage is outlined in remarkable detail in chat exchanges recovered from the cellphone of one of Mr. Kurz’s closest allies and friends, Thomas Schmid.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Underground”12 letters
Not quite right?
"Search similar patterns."
S___________