WordNet sense 1 (giving offense to moral sensibilities and injurious to reputation):

disgraceful, scandalous, shocking

WordNet sense 2 (deliberately violating accepted principles of right and wrong):

immoral

WordNet sense 3 ((used of conduct or character) deserving or bringing disgrace or shame):

black, ignominious, inglorious, opprobrious

WordNet sense 4 (lacking honor or integrity; deserving dishonor):

dishonourable