Casuistry

The science or doctrine of dealing with cases of conscience, of resolving questions of right or wrong in conduct, or determining the lawfulness or unlawfulness of what a man may do by rules and principles drawn from the Scriptures, from the laws of society or the church, or from equity and natural reason; the application of general moral rules to particular cases.

Sophistical, equivocal, or false reasoning or teaching in regard to duties, obligations, and morals.

moral philosophy based on the application of general ethical principles to resolve moral dilemmas

argumentation that is specious or excessively subtle and intended to be misleading