The most common and most likely answer to this crossword clue is the 11 letter word COMPLICATED
I've seen this crossword clue in The Guardian
C
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More clues leading to the result COMPLICATED
- Intricate feline parts fell in
- Followed orders: catching pet’s involved
- County politician didn’t tell the truth about whip becoming involved.
- Agreed about spiteful woman being involved
- Fellow politician with non-standard dialect difficult to understand
- Confused tabby’s followed around
- Comic lad playing with pet becoming confused
- Get this straight — accept I’m old and confused!
- Agreed to cooperate, keeping puss inside — not that easy?
Buddy explains!

The straight part
We know that "involved" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case involved = complicated.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 COMPLICATED mean?
COMPLICATED verb- To make complex; to modify so as to make something intricate or difficult.
- To involve in a convoluted matter.
- Difficult or convoluted.
- Folded longitudinally (as in the wings of certain insects).