Grim

Grim (?), a. [Compar. Grimmer (-mer); superl. Grimmest (?).] [AS. grim; akin to G. grimm, equiv. to G. & D. grimmig, Dan. grim, grum, Sw. grym, Icel. grimmr, G. gram grief, as adj., hostile; cf. Gr. ?, a crushing sound, ? to neigh.] Of forbidding or fear-inspiring aspect; fierce; stern; surly; cruel; frightful; horrible.

Whose grim aspect sets every joint a- shaking.
Shak.

The ridges of grim war.
Milton.

Syn.-- Fierce; ferocious; furious; horrid; horrible; frightful; ghastly; grisly; hideous; stern; sullen; sour.