Synonyms for Horrid (same or very similar meaning)
WordNet sense 1 (grossly offensive to decency or morality; causing horror):
hideous, horrific, outrageousWordNet sense 2 (unpleasant or disgusting especially to the senses):
offensiveWordNet sense 3 (having undesirable or negative qualities):
badFrom the ODE community, based on WordNetadd/edit