Pragmatic sanction is a term used to describe a law or decree that is based on practical considerations rather than principle. Synonyms for this term include practical law, practical decree, realistic rule, realistic law, utilitarian law, utilitarian decree, functional law, functional decree, and expedient law. These terms all emphasize the idea that such a law or decree is based on practicality, rather than abstract theory or ideology. They also suggest that the law is intended to serve a specific purpose or achieve a specific goal, rather than simply being a matter of principle or tradition. Overall, these synonyms convey a sense of practicality, efficiency, and purposefulness.