1 : the combination of different forms of belief or practice
2 : the fusion of two or more originally different inflectional forms
syn·cre·tist \-tist\ noun or adjective
syn·cre·tis·tic \ˌsiŋ-krə-ˈtis-tik, ˌsin-\ adjective
Of course and thank you. What you implied by syncretism was a combination of beliefs. This would be serious and untrue because it would undermine faith. The milder and innocent form of adaptation or inculturation of local customs to convey and enhance the belief is not only acceptable but indeed desirable.