1) Abhorrent 2) Abominable 3) Appalling 4) Arousing aversion or disgust 5) Awful 6) Causing disgust 7) Coarse 8) Crass 9) Disgustful 10) Distasteful 11) Dreadful 12) Foul 13) Gross 14) Hideous 15) Highly offensive 16) Horrendous 17) Horrible 18) Horrid 19) Horrifying 20) Loathly 21) Loathsome 22) Much past unpalatable 1) Anathematic 2) Appalling 3) Bad 4) Creepy 5) Disgustful 6) Foul 7) Fulsome 8) Gross 9) Hateful 10) Horrible 11) Icky 12) Indigestible 13) Loathly 14) Loathsome 15) Nauseous 16) Noisome 17) Obscene 18) Odious 19) Overpowering 20) Repelling 21) Repugnant 22) Repulsive 23) Revolting 24) Skanky 25) Squalid 
• (a.) That causes disgust; sickening; offensive; revolting. • (p. pr. & vb. n.) of Disgust
Dis·gust'ing adjective That causes disgust; sickening; offensive; revolting. -- 
[adj] - highly offensive
disgustful adjective highly offensive; arousing aversion or disgust; `a disgusting smell`; `distasteful language`; `a loathsome disease`; `the idea of eating meat is repellent to me`; `revolting food`; `a wicked stench`
causing disgust; offensive to the physical, moral, or aesthetic taste.