strongly disliked or disapproved of
anathema - disagreeable
Something or somebody ‘anathema’ to you can be regarded as totally the opposite of what you like or believe in. Therefore, this formal word implies a feeling much greater than dislike. It is instead something you loathe and diametrically oppose. Typically used as a predicate nominative.
The guiding principle behind that movement is to bring people together in a peaceful way. Therefore, violence is anathema to them.
There is no way I could ever get on with somebody like James. His political views are simply anathema to me.
The company’s latest staff directives should be anathema to everybody who wants to see workers treated with dignity and fairness.