grisly / gristly / grizzly
Horrible, full of gristle, and the bear.
Grisly means horrible: a grisly scene. Gristly means full of gristle: a gristly cut. Grizzly is the bear, or grayish: a grizzly bear, grizzly hair. Do not write grizzly scene for a horror.
Examples
Use a grisly wreck
Use a gristly steak
Use a grizzly in the pass
Avoid a grizzly wreck