Definitions from Wiktionary (atheist)

▸ noun:  (religion) A person who does not believe in deities or gods.
▸ noun:  (strictly) A person who is certain that no deities exist or who thinks that the existence of deities can be disproven.
▸ noun:  (loosely) A person who doubts the existence of deities (therefore, an agnostic may be considered an atheist).
▸ noun:  (very broadly) Any person lacking belief in deities (including children who are unaware of religion).
▸ noun:  (uncommon) A person who does not believe in a particular deity (but may believe in another deity).
▸ noun:  (sometimes proscribed) A person who does not believe in any religion (not even a religion without gods); a nonreligious person.
▸ adjective:  Of or relating to atheists or atheism; atheistic.
▸ verb:  (transitive, very rare) To make someone an atheist.
▸ Also see atheist

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