verb//(dis-un-der-stand)- to fail to comprehend or understand why something is the way it is, when it is obvious that the situation should be otherwise or the situation defies logic or common sence. Similar in meaning to misunderstand, however it implies that the speaker blames the sourse, often a person or group of people, for intentional causing confusion or simply being too lazy to clarify the situation.
I just got a soda from the machine and it's flat. I disunderstand; I just saw the soda man stock the machines.
To believe something with great confidence that in fact is verifiably false.
"It's clear you disunderstand how a baby comes in to the world because it's pretty much established that storks aren't involved."