ecclesiasticism

noun

ec·​cle·​si·​as·​ti·​cism i-ˌklē-zē-ˈa-stə-ˌsi-zəm 

e-ˌklē-

: excessive attachment to ecclesiastical forms and practices

Word History

Etymology

ecclesiastic entry 1 or ecclesiastic(al) + -ism

First Known Use

circa 1859, in the meaning defined above