syncretic - adj. Uniting and blending together different systems, as of philosophy, morals, or religion.

Syncretic is the adjective form of syncretism, from Greek synkretismos, “federation of Cretan cities,” from sunkretizein, “to unite against a common enemy, in the manner of the Cretan cities,” from syn-, “with, together” + Kres, Kret-, “Cretan.