Agnostic Atheist here.
ya cant be both agnostic and athiest..
athiest is a COMPLETE disbeliefe for god, the afterlife and anything spiritual. that conflicts with being an agnostic
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One can be both agnostic and atheist. The idea you can't is a common misconception. Agnosticism is a manner in which beliefs are held, which is a negative form of the word gnosticism. Gnosticism was and is a philosophical component of certain Christian theologies, whereby one can know with certitude the existence of god, and this spiritual certainty is considered by gnostics to be a key component of spirituality.
By contrast, agnosticism is the absence of gnosticism - that is, it is a lack of spiritual certainty - a manner in which a given belief is held, which logically, due to the problem of induction, must be the default stance on any proposition until the proposition is verified by evidence. Both theists (believers in a deity) and atheists can be agnostics, because both can hold their respective beliefs ("there exists a deity" and "there does not exist a deity") in the same manner - one of rational recognition of the limitations of knowledge without evidence.
In fact, one cannot be "just" an agnostic when describing matters of religion and spirituality, as it denotes a disposition towards spiritual knowledge.