| grim(adjective, awful, shocking, upsetting, frightening) |
| grisly(adjective, awful, terrible, grim, shocking) |
| gruesome(adjective, awful, grim, shocking, upsetting) |
| hair-raising(shocking, upsetting, frightening) |
| hallucinatory |
| hideous(adjective, awful, terrible, grim, shocking) |
| horrendous(adjective, awful, terrible, grim, shocking) |
| horrible(adjective, awful, grim, shocking, upsetting) |
| horrid(adjective, awful, terrible, grim, shocking) |
| horrific(shocking, upsetting, frightening) |
| horrifying(adjective, awful, terrible, grim, shocking) |
| hyperphysical(adjective, demoniac, unspecific, supermundane) |
| indefinite |
| indeterminate |
| indistinct |
| livid(adjective, awful, terrible, grim, shocking) |
| loathsome(adjective, awful, terrible, grim, shocking) |
| lurid(adjective, awful, terrible, grim, shocking) |
| macabre(adjective, awful, grim, shocking, upsetting) |
| mild |