When it comes to expressing a strong and vehement disapproval towards something, the phrase 'is abhorrent' just about manages to encapsulate it. But there are also a host of synonyms that can be used to convey the same sense of disgust. Words like detestable, loathsome, repugnant, revolting, reprehensible, contemptible, objectionable, disgusting and nauseating all convey a similar distaste towards something. The key is to choose the word that best fits the context, and to use it with appropriate emphasis and tone if you want your feelings to be properly understood. Whatever word you choose, however, should be wielded judiciously and with due consideration for its power and impact.