Cryptic crossword clue
Gloomy place in which Jean-Paul Sartre conducted his affairs? 5

The most common and most likely answer to this crossword clue is the 5 letter word UNLIT

I've seen this crossword clue in Financial Times
U
N
L
I
T


Buddy explains!

The straight part
We know that "Gloomy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gloomy = unlit.
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 UNLIT mean?

UNLIT adjective
  1. Not lit

Latest crossword clues with full explanations