underground

Part of speech: adjective

Situated, done, or operating beneath the surface of the ground.

Part of speech: adjective

Done in secret.

Part of speech: adverb

Beneath the surface of the ground; secretly.

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Usage examples "underground":

  1. I have been too long underground, because, while I continue to hide, I am as a drawn sword between two lovers." - "The Complete Project Gutenberg Works of George Meredith", George Meredith.
  2. Sometimes he wondered if the members of his underground- or anybody else for that matter- ever realized the grim conclusions formed by the Philosophy of Violence. - "Rastignac the Devil", Philip José Farmer.
  3. The psychological effect was that of blank darkness, the black darkness of far underground, although the moon was sailing the heavens. - "The Killer", Stewart Edward White.