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

  • adj. Unmerciful; severe: an unsparing superior officer; unsparing criticism.
  • adj. Not frugal; generous.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Without sparing

from the GNU version of the Collaborative International Dictionary of English

  • adj. Not sparing; not parsimonious; liberal; profuse.
  • adj. Not merciful or forgiving.

from The Century Dictionary and Cyclopedia

  • Not sparing; liberal; profuse; abundant: as, the unsparing use of money.
  • Not merciful; unmerciful: as, unsparing publicity.

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

  • adj. not forbearing; ruthless
  • adj. very generous


un- + sparing (Wiktionary)



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