Of a fierce, stern, or forbidding aspect; severe or repellent in appearance or demeanor; fierce; sullen; surly.
Stern in character or quality; unyielding; dreadful; formidable: as, grim determination.
Marked by harshness or severity; distressful; dolorous; cheerless: as, grim suffering; a grim jest.
Synonyms Grisly, Hideous, etc. (see ghastly); severe, harsh, hard.
noun.
Anger; wrath.
To make grim; give a stern or forbidding aspect to.