What is the meaning of prefix in disarranged?

The prefix in "disarranged" is dis-. It means "the opposite of" or "to undo."

Here's how it works:

* Arrange: To put things in order.

* Disarrange: To put things out of order, to undo the arrangement.

So, "disarranged" means something that is no longer arranged, or in a state of disorder.