The most common and most likely answer to this crossword clue is the 11 letter word DIALECTICAL
I've seen this crossword clue in The Times
D
I
A
L
E
C
T
I
C
A
L
More clues leading to the result DIALECTICAL
Buddy explains!

The straight part
We know that "maybe Marxist?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case maybe marxist? = dialectical.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 DIALECTICAL mean?
DIALECTICAL adjective- Of, or pertaining to dialectic; logically reasoned through the exchange of opposing ideas.
- Of, or peculiar to a (nonstandard) dialect; dialectal.