secular
n.n. not connected with religion or spiritual matters. You use this to describe things like laws, schools, or music that are separate from the church.
n. relating to worldly things as distinguished from spiritual or religious ones; not bound by monastic vows or religious rules.
The country has a secular government that treats all religions equally.
While the holiday has religious roots, many people celebrate it in a purely secular way by sharing a meal with friends.
The transition from a theological to a secular legal framework allowed for a more pluralistic society where civil rights were not contingent upon religious affiliation.
From Middle English seculer, from Old French seculer, from Latin saeculāris (“of the age”), from saeculum.
Typically used to modify nouns related to institutions, music, or governance. Often contrasted with 'sacred' or 'religious'.