Synonyms of gruesome

1 Syllable
weird, gross, lou, grim, sick
2 Syllables
ghoulish, grisly, sickie, horrid, yucky, monstrous, fearful, ghastlier, grimmer, daunting, creepier, morbid, frightful, lurid, grody, squalid, scuzzy, grimmest, spookish, ghastly, awful, hideous, shocking, yecchy, ugly, creepy, deathly, grabber, skanky, dismal
3 Syllables
loathsome, ghostlike, terrible, terrifying, teratoid, appalling, macabre, repugnant, horrible, sleazeball, horrendous, miscreated, disgusting, horrific, horrifying
4 Syllables
repulsive, offensive, spine-tingling, defunctive
5 Syllables
abominable