1.) A person who lacks belief in a god or gods.
2.)A person who does not accept that there is a metaphysical superior or higher force in their life.
3.) A person who believes that no god or gods exist.
However atheists.org states “Atheism is not a disbelief in gods or a denial of gods; it is a lack of belief in gods.
Such wide variation in meaning is confusing.
Sometimes the term atheist is used when the person who claims to be atheist is rejecting the human definition of God or gods, but is still open to the concept of a Higher Power or humanistic force for love & good.