grue·some 
/ˈgru:səm/ adjective
/ˈgru:səm/ adjective [more gruesome; most gruesome] : causing horror or disgust
▪ The police report described the scene in gruesome detail. ▪ a gruesome murder
▪ The police report described the scene in gruesome detail. ▪ a gruesome murder
— grue·some·ly adverb
▪ She was gruesomely murdered.
▪ She was gruesomely murdered.
— grue·some·ness noun [noncount]
