A justificationology is used when somebody wants you to believe they are apologizing, however, its apparent that they're really using the apology as a front for more of a justification of whatever they've done. It is not a true heartfelt apology.
Jack: I apologize but I really just feel like this is why I...
Jill: Uh, is this a justificationology or are you really sorry?
Jack: I'm just saying that I did that because I...
Jill: Justificationology. DYSAB.
The act of trying to find plausible answers for your not always too bright actions, motives, speeches, or any other physical/mental commited by anything.
"Jeffery, any justification as to why you crapped inside the flowerpot?"
"Oh, I heard that the price of fertilizer was going up, so I thought hell, why not"
After an insane party or drunken night when one does something regrettable to watch Skins (usually UK) to feel better and that there are plenty of other people out there doing stupid things.
When you call someone out who's wronged you and they try to use your response, anger, or retaliation to justify what they did.
Person A: "I only lied because I knew you'd react like this!"
Person B: "That's some retroactivejustification bullshit! That's not how time works. The cause happens BEFORE the result, dumbass!"