The most common and most likely answer to this crossword clue is the 10 letter word FUNDRAISER
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result FUNDRAISER
- Benefit enjoyment is exhausting - where names goes, I'm not sure
- Enjoyment over day is rare sadly in charitable event
- Merriment shown by artist in varied rides in charitable event?
- Charity event Freudians organised on river
- Charity event offers enjoyment — a rider’s fantastic
- Writer of begging letter? Creates amusement with ‘Dear Sir’ misspelt
- . Mock doctor, a miser spending some money at charity event
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 FUNDRAISER mean?
FUNDRAISER noun- An event undertaken to get money by voluntary contributions for a particular activity, such as equipment for extracurricular sports programs, or to defray laboratory costs (salaries) for research of a cure for a particular disease.
- An individual who collects money from the public for some charitable cause.