omnishambles - definition and synonyms

noun [singular] British humorous 

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/ˈɒmnɪˌʃæmb(ə)lz/
  1. something that is very badly organized and a failure in every way possible

    The omnishambles budget certainly did damage to the Tory reputation for competence.

Word story
The word was first used in 2009 in the BBC TV series The Thick of It, a satirical comedy about the inner workings of the UK government.