Hostile or indifferent to religion; ungodly.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "irreligious" in a sentence
"No. Implying that all the arts and sciences are irreligious is very like saying that all professions except that of the law are not about the law."
"I don’t think acceptance of irreligious is anything like the acceptance of same-sex marriage, actually."
"Forty thousand word irreligious John Carpenter homage?"