atheism

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noun athe·ism \ˈā-thē-ˌi-zəm\

Definition of atheism

  1. 1a :  a lack of belief or a strong disbelief in the existence of a god or any godsb :  a philosophical or religious position characterized by disbelief in the existence of a god or any gods

  2. 2 archaic :  godlessness especially in conduct :  ungodliness, wickedness

Origin and Etymology of atheism

Middle French athéisme, from athée atheist, from Greek atheos godless, from a- + theos god


First Known Use: 1546



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