Synonyms of abominable

1 Syllable
foul, bad, base, vile, dang, lou, gross, fouls, grim
2 Syllables
piller, heinous, odious, heeler, squalid, scuzzy, dreadful, stinking, awful, dratted, currish, hairy, lousy, rotten, foulest, shocking, badder, fouled, horrid, grody, baser, wicked, hellish, cursed, wretched, grisly, sickie, yucky, basest, baddest, cruddy, sleazy, fouler, hideous, yecchy, skanky, beastly, scurvy
3 Syllables
loathsome, gruesome, damnable, outrageous, atrocious, revolting, repellent, horrific, nauseating, ill-famed, obnoxious, horrible, disgusting, terrible, infamous, invidious, off-putting, sleazeball, hateful, hateable, abhorrent, offputting, repugnant, nefarious
4 Syllables
contemptible, repulsive, execrable, unspeakable, offensive, detractory, distasteful, unlikable, despicable
5 Syllables
reprehensible, undescribable, unconformable, inexpressible, indefinable, undesirable, unutterable
6 Syllables
incommunicable