deep - definition and synonyms


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  1. 1
    a long way down from the top or the surface

    men who work deep under the ground

    deep below the ocean’s surface

  2. 2
    a long way into something

    They continued deep into the forest.

  3. 3
    if people or things are two deep, three deep etc, there are two, three etc rows of them behind or on top of one another

    People were standing three deep at the side of the road to watch the procession.