| Irreligion | n. [ L. irreligio: cf. F. irréligion. See In- not, and Religion. ] The state of being irreligious; lack of religion; impiety. [ 1913 Webster ] |
| Irreligionist | n. One who is irreligious. [ 1913 Webster ] |
| irreligionist | (n) someone who is indifferent or hostile to religion |