secular

Worldly rather than spiritual.

Not relating to religion or to a religious body; nonreligious.

Not bound by the full monastic rule of a religious order. Used of clergy.

Relating to or advocating secularism.

Occurring or observed once in an age or century, as games in ancient Rome.

Lasting or persisting for a long time.

Of or relating to characteristics of astronomical phenomena that change slowly over time.

A member of the secular clergy.