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redouble

[ree-duhb-uh l] /riˈdʌb əl/
verb (used with object), redoubled, redoubling.
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.
verb (used without object), redoubled, redoubling.
6.
to be doubled; become twice as great.
7.
to be echoed; resound.
8.
Bridge. to double the double of an opponent.
noun
9.
Bridge. the act of doubling one's opponent's double.
10.
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.
Origin of redouble
1470-1480
1470-80; < Middle French redoubler. See re-, double
Related forms
redoubler, noun
Can be confused
redouble, reduplicate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for redouble

redouble

/rɪˈdʌbəl/
verb
1.
to make or become much greater in intensity, number, etc: to 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)
noun
4.
the act of redoubling
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
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Word Origin and History for redouble
v.

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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