The definition of omnishambles is a situation of total disorder and chaos.
An example of an omnishambles is the financial trouble stemming from the failure of a major bank.
- (UK, chiefly politics) A situation that is bad or mismanaged in every way.
- Between the car accident, the food poisoning and the lost keys, the holiday was an omnishambles.
omni- + shambles. Coined by the television show The Thick of It in 2009.