:::I think Trypt's proposal is an improvement over the current version that has become watered-down by misinterpretation of [[WP:NAD|"wikipedia is not a dictionary"]. I do have remaining concerns about saying "atheism can be...simply the absence of belief that any deities exist" because this endorses that def (and the other 2)  each as adequate as another. Also, by just listing the defs rather than presenting them in a context, it actually makes the paragraph MORE like a dictionary. I know stating that there actually are multiple "definitions" has become unpopular here recently, but saying "Atheism has been defined as... the simple absence of belief that any deities exist" would remove any endorsement from any of the defs. (Btw, such would not state that there are no other defs.) Still Trypt's proposal is better than a euphemistic opening that says competing defs are merely "describing" atheism. I do foresee future editors wanting to substitute "is" for "encompasses various forms of",  and even attempts to merge nontheism and atheism, and I do hope others will also be prepared to resist any such proposals.