Etymology
From Middle English grame, gram, grome, from Old English grama (“rage, anger, trouble, devil, demon”), from Proto-Germanic *gramô (“anger”), *gramaz (“fiend, enemy”), from Proto-Indo-European *gʰrem- (“to rub, grind, scrape”). Cognate with Middle Dutch gram (“angry”), Dutch gram (“wrath”), Middle Low German gram (“anger”), German Gram (“grief, sorrow”), Old Danish gram (“devil”), Icelandic gramir, gröm (“fiends, demons”). Related to gram (“angry”, adjective), grim.