What does "omnishambles" mean?

A situation that is bad or mismanaged in every way.

What is a synonym for "omnishambles"?

Common synonyms include: clusterfuck.

Pronounced //ˈɒmniˌʃæmbəlz//.

/ˈɒmniˌʃæmbəlz/ noun, slang

noun, slang ·Uncommon ·College level

Noun

1
A situation that is bad or mismanaged in every way. UK, informal
"Between the car accident, the food poisoning and the lost keys, the holiday was an omnishambles."

"Between the car accident, the food poisoning and the lost keys, the holiday was an omnishambles."

From omni- + shambles. Introduced by the television show The Thick of It in 2009.