aliturgical
/ˌalɪˈtəːdʒɪkl/ /ˌeɪlɪˈtəːdʒɪkl/Christian Church
adjective
Without liturgy, specifically designating a day on which the liturgy is not celebrated.
Origin
Late 19th century; earliest use found in Orby Shipley (1832–1916), liturgical scholar and Roman Catholic convert. From post-classical Latin aliturgicus aliturgic + -al.