Synonyms for Abominable (same or very similar meaning)
WordNet sense 1 (unequivocally detestable):
detestable, execrable, odiousWordNet sense 2 (evoking or deserving hatred):
hatefulWordNet sense 3 (exceptionally bad or displeasing):
atrocious, awful, dreadful, painful, terrible, unspeakableWordNet sense 4 (having undesirable or negative qualities):
badFrom the ODE community, based on WordNetadd/edit