Abhorrent (adjective)

1. Inspiring disgust and loathing; repugnant.
2. Completely opposed to one's beliefs or values.

Origin:

From latin abhorrentem, from abhorrere "to shrink back in horror from".

Examples:

1. The thought of hurting someone is abhorrent to me.
2. The idea of eating dog meat is abhorrent to most Westerners.
3. His behavior is abhorrent and will not be tolerated.
4. The act of slavery is abhorrent and should be condemned.
5. The living conditions in that place were absolutely abhorrent.