irreligious

/ˌˈɪ(r)rəˌlɪdʒəs/

Other forms: irreligiously

If you're irreligious, you don't believe in a religion, and you may even feel some bitterness toward religion in general.

Being irreligious can vary from not caring one way or another about religion to actively opposing the very idea of religion. Atheism — not believing in any god — and agnosticism — doubting the existence of god — are seen as irreligious. You're also irreligious if you do believe in god but don't belong to a religious group or attend religious services. The ir- prefix, not, is attached to religious, "believing in a religion."

Definitions of irreligious

1. adjective

   hostile or indifferent to religion
   synonyms:

   impious

   lacking piety or reverence for a god

   atheistic, atheistical, unbelieving

   rejecting any belief in gods

   ethnic, heathen, heathenish, pagan

   not acknowledging the God of Christianity and Judaism and Islam

   lapsed, nonchurchgoing

   no longer active or practicing

   nonobservant

   failing or refusing to observe religious customs

   antonyms:

   religious

   having or showing belief in and reverence for a deity

   pious

   having or showing or expressing reverence for a deity

   churchgoing

   actively practicing a religion

   churchly

   resembling or suggesting or appropriate to a church

   devout, god-fearing

   deeply religious

   interfaith

   involving persons of different religious faiths