frog there is no plural of atheist. remember the buffalo theorem?
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Who told you that? There very definitely is a plural; it is "atheists." Never heard of the buffalo theorem and whatever it is will not change the fact that "atheist" does indeed have a plural form.
The hippo knows:
http://www.wordhippo.com/what-...ural-of/atheist.html
So does MEMIDEX:
http://www.memidex.com/atheist
atheist | atheists <small>[plural]</small> | nontheist <small>[synonym, sense-specific]</small> | theist <small>[antonym, sense-specific]</small> | atheistic <small>[synonym, sense-specific]</small>
For more examples of usage of this term, see the citations page. | [narrowly] A person who believes that no deities exist (especially, one who has no other religious belief). | [broadly] A person who rejects belief that any deities exist (whether or... <small>(41 of 273 words, 6 definitions, 9 usage examples, pronunciation)</small>
Thank you for posting that. Perhaps that will at least settle that.