A system of beliefs can belong to one. The beliefs I stated weren't meant to be general. And most other beliefs are derived consequently from the no-god part. But that's neither here nor there.
Nothing can be derived from 'there is no God' other than statements concerning God.
The faith I use is: 'complete trust, unquestioning confidence.' Right out o' me Oxford dictionary. The second entry is: 'strong belief, especially in a religious docrine; a system of beliefs, a religion.' This doesn't implicate a religion specifically and can also be used. Only a moronic atheist would profess to be able to prove there is no god or gods. Hence, a thoughtful atheist must have faith. Really, only an agnostic is can be considered faithless. But even this is not completely true.
Let's replace god with leprechauns for a moment. Do you have to be an agnostic about leprechauns to not have faith on the topic?
Agnosticisim is the belief that you can't know for sure. Nevertheless, agnostics generally have some sort of opinion on the subject, and are thus either theistic agnostics or atheistic agnostics.
Atheism, as we've covered, is not a belief system. And I do not have complete trust and unquestioning confidence in my lack of belief in God; if God showed up, I'd believe in him.
And it's my view that an atheist with a 'lack of belief' or no faith is one that doesn't think much on the subject.
Huh? How so? An atheist is somebody who lacks a belief in God, by definition.
Yet each man kills the thing he loves--
By each let this be heard...
The coward does it with a kiss,
The brave man with a sword!