The most common and most likely answer to this crossword clue is the 11 letter word CONTRETEMPS
I've seen this crossword clue in Financial Times
C
O
N
T
R
E
T
E
M
P
S
More clues leading to the result CONTRETEMPS
- Barney books into centre with secretarial staff?
- Disagreement from centre to new Members of Parliament
- Tempers fraying after prisoner gets time for skirmish
- Protects men’s involvement in minor setback
- Tory tempters falling out in argument
- Study time about to be given to office workers, resulting in dispute
- Clash of politicians after moving to centre
Buddy explains!

The straight part
We know that "Barney" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case barney = contretemps.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONTRETEMPS mean?
CONTRETEMPS noun- An unforeseen, inopportune, or embarrassing event; a hitch
- An ill-timed pass.