from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To double.
  • transitive v. To repeat.
  • transitive v. Games To double the doubling bid of (an opponent) in bridge.
  • intransitive v. To become twice as great.
  • intransitive v. Games To double a double in bridge.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To double, especially to double again; to increase considerably; to multiply; to intensify.
  • v. To double an opponent's doubling bid.
  • v. To become twice as big.

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To become greatly or repeatedly increased; to be multiplied; to be greatly augmented.
  • transitive v. To double again or repeatedly; to increase by continued or repeated additions; to augment greatly; to multiply.

from The Century Dictionary and Cyclopedia

  • To double again or repeatedly; multiply; repeat often.
  • To increase by repeated or continued additions.
  • To repeat in return.
  • To become twice as much; be repeated; become greatly or repeatedly increased.
  • In bridge, to double again. After the dealer's side has declared, if either adversary doubles, the maker of the trump or his partner can redouble. See bridge.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. make twice as great or intense
  • v. double in magnitude, extent, or intensity
  • v. double again


re- +‎ double. (Wiktionary)



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