Detestable(a.) Worthy of being detested; abominable; extremely hateful; very odious; deserving abhorrence; as, detestable vices.
Thesaurus Entries
abhorrent, abominable, arrant, atrocious, awful, base, beastly, below contempt, beneath contempt, blameworthy, brutal, contemptible, crude, deplorable, despicable, despiteful, dire, disgusting, dreadful, egregious, enormous, execrable, fetid, filthy, flagrant, forbidding, foul, fulsome, grievous, gross, hateful, heinous, horrible, horrid, ignoble, infamous, lamentable, loathsome, lousy, malodorous, mephitic, miasmal, miasmic, monstrous, nasty, nauseating, nefarious, noisome, notorious, noxious, objectionable, obnoxious, obscene, odious, offensive, outrageous, pitiable, pitiful, rank, rebarbative, regrettable, repellent, reprehensible, repugnant, repulsive, revolting, rotten, sad, scandalous, schlock, scurvy, shabby, shameful, shocking, shoddy, sickening, sordid, sorry, squalid, stinking, terrible, too bad, unclean, unlikable, vile, villainous, woeful, worst, worthless, wretched