1. a person who believes that God does not exist

Examples

• She became an atheist after studying philosophy in college.
• The atheist argued that there was no scientific evidence for God’s existence.
• Many famous scientists throughout history have been atheists.
• He was raised in a religious family but later became an atheist.
• The debate between the atheist and the minister drew a large crowd.
• As an atheist, she found meaning in life through human relationships and personal achievement.