regular
/ˈre-gyə-lər/
adjective
constituted, conducted, scheduled, or done in conformity with established or prescribed usages, rules, or discipline
recurring, attending, or functioning at fixed, uniform, or normal intervals
orderly, methodical
noun
one who is regular: such as
one who is usually present or participating; especially : a long-standing regular customer
one who can be trusted or depended on
noun
any of the five possible regular polyhedrons that include the regular forms of the tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron