What is the meaning of Atheist?

A person who does not believe in deities or gods.

  1. A person who is certain that no deities exist or who thinks that the existence of deities can be disproven.

    A person who is certain that no deities exist or who thinks that the existence of deities can be disproven.

    A person who doubts the existence of deities (therefore, an agnostic may be considered an atheist).

    Any person lacking belief in deities (including children who are unaware of religion).

    A person who does not believe in a particular deity (but may believe in another deity).

    A person who does not believe in any religion (not even a religion without gods); a nonreligious person. (Can we verify this sense?)

    Of or relating to atheists or atheism; atheistic.

    To make someone an atheist.

    Alternative form of ateist

    Source: wiktionary.org