The most common and most likely answer to this crossword clue is the 11 letter word SANSCULOTTE
I've seen this crossword clue in Independent
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More clues leading to the result SANSCULOTTE
Buddy explains!
The straight part
We know that "Revolutionary" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case revolutionary = sansculotte.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 SANSCULOTTE mean?
SANSCULOTTE noun- A plebeian Parisian, especially a lower-class republican during the French Revolution.