For starters, the suffix ism means many different things, it can refer to an action (vandalism) a theory (magnetism) or a classification or grouping of people or ideas (theism).
The etymology for the word "atheism" is from the Latin "A theos" (without god) making atheism not an ism it's self, but the rejection of one. Atheism is neither an action, a theory or a classification, it only exists in it's present form because at some point in time for unknown reasons the term "a theos" was turned into a single word.
What it really means is "without theism".
So again, atheism is not an ism in the way theism, vandalism and magnetism are.
The etymology for the word "atheism" is from the Latin "A theos" (without god) making atheism not an ism it's self, but the rejection of one. Atheism is neither an action, a theory or a classification, it only exists in it's present form because at some point in time for unknown reasons the term "a theos" was turned into a single word.
What it really means is "without theism".
So again, atheism is not an ism in the way theism, vandalism and magnetism are.
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