1) Alarming 2) Ashen 3) Awful 4) Charnel 5) Dreadful 6) Ghoulish 7) Grim 8) Grisly 9) Gruesome 10) Hideous 11) Horrid 12) Horrific 13) Horrifying 14) Lurid 15) Macabre 16) Revolting 17) Terrible 18) Unpleasant 19) Wan 1) Alarming 2) Awful 3) Dreadful 4) Frightful 5) Grim 6) Grisly 7) Gruesome 8) Gruesome, repellent 9) Horrible 10) Horrifying 11) Inspiring horror 12) Macabre 13) Shockingly repellent 
• (adv.) In a ghastly manner; hideously. • (superl.) Like a ghost in appearance; deathlike; pale; pallid; dismal. • (superl.) Horrible; shocking; dreadful; hideous.
Ghast'ly adverb In a ghastly manner; hideously. « Staring full ghastly like a strangled man.» Shak. Ghast'ly adjective [ Compar. Ghastlier ; superl. Ghastliest .] [ Middle English gastlich , gastli , fearful, causing fear, from gasten to terrify, Anglo-Saxon gæstan . Confer Aghast , Gast , 
[adj] - shockingly repellent
grim adjective shockingly repellent; inspiring horror; `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 a...