Ritualistic

[Kai]

adjective.
Usually referring to an act or person, could be used to refer to ritual such as [prayer]. It can also be used as a description of a person were the person likes to [preform] many [rituals] of religion. Could be used as an insult when properly used.

[Tina]

Relating to or characteristic of rituals followed as part of a religious or solemn ceremony.

[Jason Yan]

connected with or like a ritual (= a set of fixed actions, especially ones performed as part of a ceremony) :