The most common and most likely answer to this crossword clue is the 8 letter word ANECDOTE
I've seen this crossword clue in The Times
A
N
E
C
D
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More clues leading to the result ANECDOTE
- Story from a relative omitting one gripping point
- What’s amusing in key National Executive Committee notes
- Story a Ted once made up
- A comment about City Director's first story
- Shortly one's told to dance, bursting with energy
- Account involving narrative, extremely droll, one tells everyone for starters?
- Worried about party after NEC story
- Account provided once date has been amended
- Worried about party supporting Birmingham Centre’s story
- Story of English record conveyed in a message
Buddy explains!

The straight part
We know that "What’s amusing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case what’s amusing = anecdote.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 ANECDOTE mean?
ANECDOTE noun- A short account of a real incident or person, often humorous or interesting.
- An account which supports an argument, but which is not supported by scientific or statistical analysis.
- A previously untold secret account of an incident.
- To tell anecdotes (about).