The most common and most likely answer to this crossword clue is the 5 letter word TIMON
I've seen this crossword clue in Financial Times
T
I
M
O
N
More clues leading to the result TIMON
- Athenian misanthrope puts doctor in metal box
- Rear of boat I am attached to – or was
- Misanthrope making money that’s pocketed a while
- Athenian character penned by dramatist — I’m one
- In effect, I’m only a Greek misanthrope
- Athenian drama has American university in a spin
- As an Athenian, this writer’s in the fashion
- Athenian turmoil is May’s opportunity — new leaders wanted
- Misanthrope making money in a jiffy? The opposite
- Athenian money requiring flash investment
Buddy explains!

The straight part
We know that "Athenian" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case athenian = timon.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.