underground


Definition: Meaning of, underground in English to English dictionary.

Pronunciation: / ˈʌndəgraʊnd /

  • adjective
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Word Forms:
Positive Comparative Superlative
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  1. below the surface of the earth
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  2. [only before noun] an underground group, organization etc is secret and illegal
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  3. [only before noun] underground literature, newspapers etc are read by a small number of people, and would seem slightly strange or shocking to most people
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  • adverb
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Word Forms:
Positive Comparative Superlative
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  1. under the earth's surface
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  2. go underground to start doing something secretly, or hide in a secret place
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  • noun
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Word Forms:
Singular Plural
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  1. the Underground British English a railway system under the ground [=  subway American English]
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  2. the Underground an illegal group working in secret against the rulers of a country
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underground used in phrases

  • Underground Railroad (noun)
    1. secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
  • Underground Railroad, the
    1. a group of people in the US who illegally helped SLAVE s to become free by helping them to escape to the northern US and Canada, in the period before the CIVIL WAR . One of its best-known members was Harriet TUBMAN .
  • Underground Railway (noun)
    1. secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
  • underground press (noun)
    1. a system of clandestine printing and distribution of dissident or banned literature
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