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

  • n. A cranky complaining person.
  • n. A fit of ill temper. Often used in the plural with the.
  • intransitive v. To mutter complaints.
  • intransitive v. To behave in a grumpy manner.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a habitually grumpy or complaining person
  • v. to complain
  • v. to be grumpy

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

  • n. a bad-tempered person


Origin unknown.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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  • Any etymological theories?

    September 19, 2012

  • Sunday slipping astern in the spyboat, me diddling the knurls of the focal knobs, in a grump.
    John Latta, Isola di Rifiuti

    January 9, 2007