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    underground

    underground - Dictionary definition and meaning for word underground

    Definition
    (noun) a secret group organized to overthrow a government or occupation force
    Synonyms : resistance
    Definition
    (noun) an electric railway operating below the surface of the ground (usually in a city)
    Synonyms : metro , subway , subway system , tube
    Example Sentence
    • in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'
    Definition
    (adj) under the level of the ground
    Synonyms : belowground
    Example Sentence
    • belowground storage areas
    • underground caverns
    Definition
    (adj) conducted with or marked by hidden aims or methods
    Example Sentence
    • clandestine intelligence operations
    • cloak-and-dagger activities behind enemy lines
    • hole-and-corner intrigue
    • secret missions
    • a secret agent
    • secret sales of arms
    • surreptitious mobilization of troops
    • an undercover investigation
    • underground resistance
    Definition
    (adv) in or into hiding or secret operation
    Example Sentence
    • the organization was driven underground
    Definition
    (adv) beneath the surface of the earth
    Example Sentence
    • water flowing underground
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