WordNet sense 1 (of very poor quality or condition):

deplorable, miserable, woeful, wretched

WordNet sense 2 (of low or inferior quality):

inferior

WordNet sense 3 (unequivocally detestable):

abominable, detestable, odious

WordNet sense 4 (evoking or deserving hatred):

hateful

WordNet sense 5 (deserving a curse):

damnable

WordNet sense 6 (deserving a curse; sometimes used as an intensifier):

cursed, curst