regular

Bound by religious rule; belonging to a monastic or religious order (often as opposed to secular).

Having a constant pattern; showing evenness of form or appearance.

Both equilateral and equiangular; having all sides of the same length, and all (corresponding) angles of the same size

Whose faces are all congruent regular polygons, equally inclined to each other.

Demonstrating a consistent set of rules; showing order, evenness of operation or occurrence.

Of a moon or other satellite: following a relatively close and prograde orbit with little inclination or eccentricity.

Well-behaved, orderly; restrained (of a lifestyle etc.).

Happening at constant (especially short) intervals.

Following a set or common pattern; according to the general rules of a given language.

Having the expected characteristics or appearances; normal, ordinary, standard.