The most common and most likely answer to this crossword clue is the 9 letter word DIVERSION
I've seen this crossword clue in Financial Times
D
I
V
E
R
S
I
O
N
More clues leading to the result DIVERSION
Buddy explains!
The straight part
We know that "entertainment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case entertainment = diversion.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 DIVERSION mean?
DIVERSION noun- A tactic used to draw attention away from the real threat or action.
- A hobby; an activity that distracts the mind.
- The act of diverting.
- Removal of water via a canal.
- A detour, such as during road construction.
- The rerouting of cargo or passengers to a new transshipment point or destination, or to a different mode of transportation before arrival at the ultimate destination.
- Officially halting or suspending a formal criminal or juvenile justice proceeding and referral of the accused person to a treatment or care program.