Definitions from Wiktionary (atheism)

▸ noun:  A non-belief in deities.
▸ noun:  (strictly) Belief that no deities exist (sometimes including rejection of other religious beliefs).
▸ noun:  (loosely) A lack of belief in deities, or a belief that there is insufficient evidence to believe in a god.
▸ noun:  (very loosely) Absence of belief that any deities exist (including absence of the concept of deities).
▸ noun:  (historical or rare) Absence of belief in a particular deity, pantheon, or religious doctrine (notwithstanding belief in other deities).
▸ noun:  (obsolete) Absence of belief in the One True God, defined by Moore as personal, immaterial and trinitarian (thus Islam, Judaism and unitarian Christianity), as opposed to monotheism.
▸ noun:  (sometimes proscribed) A rejection of all religions, even non-theistic ones.
▸ Also see atheism

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