chaotic

Chaotic means completely disordered. Nothing is where it should be, and no system is left to put it back.

The word covers scenes and states alike: a chaotic morning, chaotic scenes outside the stadium, a chaotic filing system. It is stronger than busy or untidy, because it says the order that once existed has broken down. The noun is chaos, and in Greek myth Chaos was the formless void before the world was made. Science borrowed it for chaos theory, where a chaotic system is not random at all but so sensitive to its starting point that nobody can predict it.