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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Morose, stern, surly.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Morose; severe of countenance; sour; surly; glum; grim.
  • adj. Low; deep in the throat; guttural; rumbling.

from The Century Dictionary and Cyclopedia

  • Morose; surly; sullen; glum.
  • Low; deep in the throat; guttural: as, a grum voice.


Blend of grim and glum (Wiktionary)



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  • With Summer's end at long last come
    It's back to the book and the sum.
    Oh, pity the dolors
    Of unwilling scholars,
    Their once merry faces grown grum.

    September 3, 2015