double - definition and synonyms

 
 
verb 

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/ˈdʌb(ə)l/
present tense
I/you/we/theydouble
he/she/itdoubles
present participledoubling
past tensedoubled
past participledoubled
  1. 1
    [intransitive] to become twice as big, twice as much, or twice as many

    The number of people without work has doubled in the last five years.

    double in size/amount/price etc:

    Their house has doubled in value since they bought it.

    1. a.
      [transitive] to increase something so that it is twice as big, twice as much, or twice as many

      The government is threatening to double the tax on alcohol.

  2. 2

    double

    or

    double over

    [transitive] to fold something so that it has two layers of equal size
  3. 3
    [intransitive] in baseball, to hit the ball far enough so that you can run to the second base