List of horrible synonyms and horrible related words.
abhorrent, abominable, appalling, arrant, astounding, atrocious, awe-inspiring, awesome, awful, baneful, base, beastly, beneath contempt, blameworthy, brutal, contemptible, deadly, deplorable, despicable, detestable, dire, direful, disagreeable, disgusting, dread, dreaded, dreadful, egregious, enormous, fearful, fell, fetid, filthy, flagrant, forbidding, formidable, foul, frightening, frightful, fulsome, ghastly, ghoulish, grievous, grim, grisly, gross, gruesome, harrowing, hateful, heinous, hideous, horrendous, horrid, horrific, horrifying, howling, infamous, lamentable, loathsome, lousy, lurid, macabre, monstrous, morbid, nasty, nauseating, nauseous, nefarious, noisome, notorious, obnoxious, odious, offensive, outrageous, pitiable, pitiful, rank, redoubtable, regrettable, repellent, repelling, reprehensible, repugnant, repulsive, revolting, rotten, rousing, sad, scandalous, schlock, schrecklich, scurvy, shabby, shameful, shocking, shoddy, sickening, sordid, squalid, terrible, terrific, terrifying, thumping, too bad, tragic, tremendous, unclean, unpleasant, unspeakable, vile, villainous, whacking, woeful, worst, worthless, wretched