SYNCRETIST

Noun

syncretist (plural syncretists)

One who attempts syncretism, the fusion of different systems or beliefs.

Source: Wiktionary

Syn"cre*tist, n. Etym: [Cf. F. syncrétiste.]

Definition: One who attempts to unite principles or parties which are irreconcilably at variance; specifically (Eccl. Hist.),

Definition: an adherent of George Calixtus and other Germans of the seventeenth century, who sought to unite or reconcile the Protestant sects with each other and with the Roman Catholics, and thus occasioned a long and violent controversy in the Lutheran church.

Source: Webster’s Unabridged Dictionary 1913 Edition