51Թ

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View synonyms for

underground

[ adverb uhn-der-ground; adjective noun verb uhn-der-ground ]

adverb

  1. beneath the surface of the ground: ground:

    traveling underground by subway.

  2. in concealment or secrecy; not openly:

    subversion carried on underground.



adjective

  1. existing, situated, operating, or taking place beneath the surface of the ground. ground.
  2. used, or for use, underground.
  3. hidden or secret; not open:

    underground political activities.

  4. published or produced by political or social radicals or nonconformists:

    an underground newspaper.

  5. avant-garde; experimental:

    an underground movie.

  6. critical of or attacking the established society or system:

    underground opinion.

  7. of or for nonconformists; unusual:

    an underground vegetarian restaurant.

noun

  1. the place or region beneath the surface of the ground. ground.
  2. an underground space or passage.
  3. a secret organization fighting the established government or occupation forces:

    He fought in the French underground during the Nazi occupation of France.

  4. (often initial capital letter) a movement or group existing outside the establishment and usually reflecting unorthodox, avant-garde, or radical views.
  5. Chiefly British. a subway system.

verb (used with object)

  1. to place beneath the surface of the ground: ground:

    to underground utility lines.

underground

adjective

  1. occurring, situated, or used below ground level

    an underground tunnel

    an underground explosion

  2. secret; hidden

    underground activities

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. going below ground level

    the tunnel led underground

  2. into hiding or secrecy

    the group was driven underground

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a space or region below ground level
    1. a movement dedicated to overthrowing a government or occupation forces, as in the European countries occupied by the German army in World War II
    2. ( as modifier )

      an underground group

  2. the underground
    an electric passenger railway operated in underground tunnels US and Canadian equivalentsubway
  3. usually preceded by the
    1. any avant-garde, experimental, or subversive movement in popular art, films, music, etc
    2. ( as modifier )

      underground music

      the underground press

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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51Թ History and Origins

Origin of underground1

First recorded in 1565–75; under- + ground 1
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Example Sentences

Examples have not been reviewed.

At the same time, the criticism has only increased the profile of an act who were essentially an underground act a month ago.

From

The IET concluded underground cables were, on average, around four-and-a-half times more expensive than overhead lines while cabling out at sea could be up to 11 times more expensive.

From

Leavitt also touted an immigration raid at an "underground" nightclub in Colorado Springs, Colorado, on Sunday, where she said officials detained more than 100 undocumented immigrants and seized weapons and drugs.

From

There have been reports traffic lights not working and the underground railway system being evacuated in Madrid, and a similar power outage in Portugal.

From

Some ash from the undeveloped hillsides may have ended up in the basin, the underground storm drain system and the landfill, Vazquez said.

From

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