• synonyms


[ree-duhb-uh l]
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verb (used with object), re·dou·bled, re·dou·bling.
  1. to double; make twice as great: to redouble one's efforts.
  2. to echo or reecho.
  3. Bridge. to double the double of (an opponent).
  4. to go back over: to redouble one's footsteps.
  5. Archaic. to repeat.
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verb (used without object), re·dou·bled, re·dou·bling.
  1. to be doubled; become twice as great.
  2. to be echoed; resound.
  3. Bridge. to double the double of an opponent.
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  1. Bridge. the act of doubling one's opponent's double.
  2. Fencing. an attack in a line other than that of the previous attack, made after the failure of the opponent to follow his or her parry of the previous attack with a riposte.
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Origin of redouble

From the Middle French word redoubler, dating back to 1470–80. See re-, double
Related formsre·dou·bler, noun
Can be confusedredouble reduplicate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for redouble

Contemporary Examples

Historical Examples

  • Yet with them grew my sense of need to redouble a lover's diligence.

    The Cavalier

    George Washington Cable

  • Lieutenant Abbot, on the other hand, appeared to redouble his deep interest.

    A War-Time Wooing

    Charles King

  • To redouble the certainty of their truth every time one thinks of them.

    The Autobiography of Madame Guyon

    Jeanne Marie Bouvier de La Motte Guyon

  • On the contrary, he seemed to redouble his efforts to mortify his son.


    Benjamin Disraeli

  • Determination to win made Madge and Phil redouble their efforts.

    Madge Morton's Secret

    Amy D. V. Chalmers

British Dictionary definitions for redouble


  1. to make or become much greater in intensity, number, etcto redouble one's efforts
  2. to send back (sounds) or (of sounds) to be sent back; echo or re-echo
  3. bridge to double (an opponent's double)
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  1. the act of redoubling
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for redouble


mid-15c., "double again, multiply" (trans.), from Middle French redoubler, from Old French re- "again" (see re-) + doubler "to double" (see double (v.)). Meaning "become twice as much" (intrans.) is from late 15c. Related: Redoubled; redoubling.

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Online Etymology Dictionary, © 2010 Douglas Harper