Relating to or characteristic of atheism or atheists.(adjective)
Inclined to atheism.(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 "atheistic" in a sentence
"Jainism, which we describe as atheistic, and the colourless respectable religion of educated Chinese, become in their outward manifestations unblushingly polytheistic."
"Linking science to a causal scenario that, in the words of a TT member, "is not strictly atheistic" is intolerable."
"When I grew up the idea of atheistic or non-theistic way of thinking wasn't even an option."