The most common and most likely answer to this crossword clue is the 12 letter word MIDDLE-CLASS
I've seen this crossword clue in The Times
M
I
D
D
L
E
-
C
L
A
S
S
Buddy explains!
The straight part
We know that "bourgeois" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bourgeois = middle-class.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 MIDDLE-CLASS mean?
MIDDLE-CLASS adjective- Occupying a position between the upper class and the working class
- Characteristic of the middle class(es); reflective of that class's values and aspirations. Commonly associated with a desire for social respectability and an emphasis on family values and education.