gruesome
1. [ adjective ] shockingly repellent; inspiring horror
Synonyms: grim ghastly macabre grisly
Examples:

"ghastly wounds" "the grim aftermath of the bombing" "the grim task of burying the victims" "a grisly murder" "gruesome evidence of human sacrifice" "macabre tales of war and plague in the Middle ages"

Related terms: alarming
Similar spelling:   gruesomely
  Grissom
  greisen
  grison
  greasiness
  Grisson
  Gregson
  Greeson
  Grayson
  gresham