One who was once an atheist, has a brief period of some form of belief, then realizes how dumb that was and goes back to his or her atheist roots.

A person who for whatever reason has decided to become an atheist and to self-righteously parade their atheism around like some badge of pride and a sign of intelligence.

Zealotry resembles that of "Born Again" Christians, Pentecostalism and religious extremists due to their inability to accept or respect non-atheism as an acceptable form of living. Born Again Atheists believe that followers of God, spirituality, religious practices are fucking idiots. In this regard, non-atheists DESERVE to be told how stupid THEY are in the most derogatory, condescending, disrespectful and argumentative way possible.

Additionally, born again atheists seek out ways to generalize non-atheists in order to assert what they perceive to be superior intellect. They insist upon religious discourse in an attempt to convert 'believers'into 'non-believers.' Ironically, this discourse resembles the very same empirical tactics that inherently alienated them into rejecting mainstream societal institutions. Therefore, born again atheists serve as mere counterparts to all other overzealous practitioners of any belief system.

Former theists or agnostics that upon shifting to atheism become as militant, preachy and annoying as Evangelical Christians. Can be spotted easily by overuse of the word 'fairytale'.