Answer: gruesome

AnswerCrossword Clue
GRUESOMEHorrible
GRUESOMEShudder-inducing
GRUESOMEHideous
GRUESOMEGhastly
GRUESOMEGrisly.
GRUESOMEGrisly
GRUESOMEAwful
GRUESOMEMacabre
gruesomecausing horror and repugnance
gruesomerepugnant, also GREWSOME