Absence of order; state of not being arranged in an orderly manner.
A physical or mental malfunction.
A disturbance of civic peace or of public order.
To throw into a state of disorder.
To knock out of order or sequence.
Chaos; a chaotic situation lacking rules or control.
Deathmatch, sometimes specifically one in which every player is pitted against all the others.
Open to anyone and with no or few rules.