Grim

According to the Old English Dictionary:

GRIM

adj. Sharp, bitter, severe, fell, fierce, dire, savage, cruel, GRIM, horrible; acer, immanis, sævus, crudelis, atrox, dirus :-- He him æt his ende grim geweorþeþ and hine gelǽdeþ on éce forwyrd he [the devil] will become cruel to him at his end, and will lead him into eternal perdition, Blickl. Homl. 25, 13: Cd. 184; Th. 230, 8; Dan. 230. Ðæt wæs grim cyning that was a fierce king, Exon. 100 b; Th. 378, 29; Deór. 23. Grim and grǽdig savage and greedy. Beo. Th. 242; B. 121. Mycel wól and grim acerba pestis, Bd. 1, 14; S. 482, 29. Se grimma wítedóm dira præsagia, 3, 14; S. 541, 9. Wæs se winter to ðæs grim ðæt manig man his feorh for cýle gesealde the winter was so severe that many a man lost his life with the cold, Blickl. Homl. 213, 31: Chr. 1005; Erl. 139, 37. Mid grimmun gefeohte with severe fighting, 5, 3: Byrht. Th. 133, 36; By. 61. On ðam grimmun dæge dómes ðæs miclan on the terrible day of the great doom, Exon. 25 b; Th. 74, 12; Cri. 1205. Ðæt wæter wæs biterre and grimre to drincanne ðonne ic ǽfre ǽnig óðer bergde amariorem elleboro fuminis aquam gustavi, Nar. 8, 29. Cýle ðone grimmestan the most severe cold, Blickl. Homl. 61, 35. Ðeáh ðú wǽre wyrmcynna ðæt grimmeste though thou hadst been of serpents the fiercest, Soul Kmbl. 167; Seel. 83. [O. Sax. O. Frs. O. H. Ger. grim acerbus, austerus, atrox, sævus, ferus: Icel. grimmr: Ger. grimm.] grim