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

  • adv. To a double degree; twice: doubly protected; made doubly certain.
  • adv. In a twofold manner.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. In a double manner; twice the severity or degree.
  • adv. in two ways
  • adv. with duplicity

from the GNU version of the Collaborative International Dictionary of English

  • adv. In twice the quantity; to twice the degree
  • adv. Deceitfully.

from The Century Dictionary and Cyclopedia

  • In a double or twofold manner; in twice the quantity or to twice the degree: as, to be doubly sensible of an obligation.
  • Deceitfully; with duplicity.

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

  • adv. to double the degree
  • adv. in a twofold manner


from Wiktionary, Creative Commons Attribution/Share-Alike License

First known usage in the 15th century.



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