Grisly means disgusting and bloody, absolutely repulsive and horrible. There’s a wonderfully creepy movie about a man who suffers a grisly death at the hands of the grizzly bears he was studying.

Do you like grisly horror movies? You might think that the reason the word grisly is so creepy, gruesome, and terrifying is somehow related to gristle, those really nasty tough parts you find in meat. But no, this is not the case. Old English grislic, the root of the word, means "horrible, dreadful." If something is gory and gross, it’s grisly.

Definitions of grisly

adj shockingly repellent; inspiring horror

“a grisly murder”
ghastly, grim, gruesome, macabre, sick
frightening because of an awareness of danger