资料来源 : Webster's Revised Unabridged Dictionary (1913)

Grum \Grum\, a. [Cf. Dan. grum furious, Sw. grym, AS. gram, and
   E. grim, and grumble. [root]35.]
   1. Morose; severe of countenance; sour; surly; glum; grim.
      ``Nick looked sour and grum.'' --Arbuthnof.

   2. Low; deep in the throat; guttural; rumbling; as,