Pronunciation : Grum
Part of Speech : a.
Etymology : [Cf. Dan. grum furious, Sw. grym, AS. gram, and E. grim, and grumble.
Definition : 1. Morose; severe of countenance; sour; surly; glum; grim. "Nick looked sour and grum." Arbuthnof.
2. Low; deep in the throat; guttural; rumbling; as,
Source : Webster's Unabridged Dictionary, 1913