Ritualistic

a.

1.

Pertaining to, or in accordance with, a ritual; adhering to ritualism.

Adj.

1.

ritualistic - of or characterized by or adhering to ritualism; "a feudal or ritualistic society"; "the ritualistic killing of a sheep"

High-Church, baptismal, ceremonial, ceremonious, conventional, decorous, eucharistic, formal, formular, formulary, hieratic, liturgic, liturgistic, paschal, pompous, ritual, sacerdotal, sacramental, sacramentarian, solemn, stately, well-mannered