The most common and most likely answer to this crossword clue is the 11 letter word SHENANIGANS
I've seen this crossword clue in The Times
S
H
E
N
A
N
I
G
A
N
S
Buddy explains!

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 SHENANIGANS mean?
SHENANIGANS noun- A deceitful confidence trick, or mischief causing discomfort or annoyance.
- Mischievous play, especially by children.
- Deceitful tricks; trickery, games.