Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A cranky complaining person.
  • noun A fit of ill temper. Used with the.
  • intransitive verb To mutter complaints.
  • intransitive verb To behave in a grumpy manner.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a habitually grumpy or complaining person
  • verb intransitive to complain
  • verb intransitive to be grumpy

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

  • noun a bad-tempered person

Etymologies

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

[Origin unknown.]

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Examples

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  • 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

  • Any etymological theories?

    September 19, 2012