Dictionary Check: subterraneous

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"subterraneous" is a valid word!

Scrabble 15 points

Words with Friends 19 points

adjective

being or operating under the surface of the earth

Example: "subterranean passages"

Synonyms:

adjective

lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)

Example: "subterranean motives for murder"

Synonyms:

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