One Christian's understanding of atheism:
First, my thanks to the dozens of atheists who have patiently or impatiently listened to numerous questions and comments and replied to the best of their ability. Since Thanksgiving, 2013, lights have gradually come on to illuminate the previous darkness shrouding the topic. My vocabulary has also become enhanced with a few new words and definitions of old ones.
A hardnosed director of sales and marketing once set a boardroom full of subordinates straight on the most effective method of getting to the crux of unresolved issues and impossible challenges. We listened with rapt attention as John quietly spelled out his pragmatic method: "We get to the bottom of things with adroit questioning; continuing until we get down to the essence of the issue, challenge or problem: that which makes it what it is; we distill it to its irreducible entity then solve it".
Please know that I've done my level best to give due diligence in applying his successful method in grasping what's real and authentic relative to atheism on this forum. At its simplest, the word 'atheism' describes or defines the category of human beings who, at some point of god-curiosity or god-consciousness, have voluntarily decided they have no interest in knowing anything about god or of the possibility of a personal relationship with him. Deep within their innermost beings they have decided god doesn't exist; they've become convinced that further inquiry would be a colossal waste of time and energy.
In biblical terms: "Romans 1:18-20 New American Standard Bible Unbelief and Its Consequences:" "For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness, because that which is known about God is evident within them; for God made it evident to them. For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse." I believe an atheist at the point of god-consciousness (becoming aware of the possible existence of a supreme being and accountable for a personal choice for or against god) says, 'no'.