According to
Oxford Dictionaries, the definition of "omnishambles" is "a situation that has been comprehensively mismanaged, characterised by a string of blunders and miscalculations."
The word was used by Malcolm Tucker — played by the Scottish actor Peter Capaldi — in the BBC political-satire sitcom
The Thick of It.
Since then,
the Guardian reports, the word has been adopted by the British Labour Party leader, Ed Miliband.
OED "word of the year"
In 2012, the term "omnishambles" was voted the
word of the year by the
Oxford English Dictionary.
Earlier this month,
Capaldi was named as the actor replacing Matt Smith as the Doctor in the BBC's long-running science-fiction television drama series,
Doctor Who.