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across - definition and synonyms

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adverb, preposition     across pronunciation in American English
Across can be used in the following ways:
as a preposition (followed by a noun): I walked across the road.
as an adverb (without a following noun): Our host hurried across to meet us.
  1. 1
    from one side to the other
    1. a.
      moving or looking from one side of a place, space, or line to the other

      Over 70 airlines fly across the Atlantic between Europe and North America.

      Barbara stared across the room at her husband.

      The children ran straight across in front of our car.

    2. b.
      reaching from one side of a space or surface to the other

      Max’s body lay across the doorway where he had fallen.

      There are four bridges across the Cedar River.

      He stood in silence with his arms folded across his chest.

    3. c.
      used for showing the width of something
      one mile/two meters etc. across:

      The channel is less than half a mile across in some places.

  2. 2
    on the opposite side of a road, river, line, etc.

    There’s a bus stop just across the road.

    They had opened a new factory across the border in Mexico.

    across from:

    I’m staying at a little hotel just across from the Libyan Embassy.

  3. 3
    in a large part of an area or surface
    1. a.
      in many parts of an area or country

      an insurance company that has over 120 offices across America

    2. b.
      used for saying that something hits or affects a large area of a part of your body

      Julia felt a burning pain across her forehead.

      He struck me across the shoulders.

    3. c.
      used for saying that something spreads until it covers all of an area or surface

      There is a danger of the conflict spreading across all of Central Africa.

      A broad smile spread across the old man’s face.

  4. 4
    used for saying that something includes or affects a whole range of people or things

    We need to test studentsability across a wide range of subjects.

    The figures show that across the economy as a whole there has been steady growth.

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to manipulate someone psychologically so that they begin to question their own perceptions and memories

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Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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