The most common and most likely answer to this crossword clue is the 8 letter word STIGMATA
I've seen this crossword clue in The Times
S
T
I
G
M
A
T
A
More clues leading to the result STIGMATA
- Test driver felt answer good enough for such marks
- A fool’s shown up about carpet marks that are disgraceful
- Dump resident on rug area to see scars
- A wally’s upset about carpet marks
- Suffering evidence, magistrate lacking in religious education bamboozled
- Mystery driver and short friend getting A marks
- Spots magistrate thundering about scrapping R.E.
- Greek character cheers collecting ultimately excellent marks
- Twerps returning dull answer for special marks
- . Wounded pragmatist leaves park oddly with marks
Buddy explains!

The straight part
We know that "marks" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case marks = stigmata.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 STIGMATA mean?
STIGMATA noun- A mark of infamy or disgrace.
- A scar or birthmark.
- (chiefly in the plural stigmata) A mark on the body corresponding to one of the wounds of the Crucifixion on Jesus' body, and sometimes reported to bleed periodically.
- The sticky part of a flower that receives pollen during pollination.
- A visible sign or characteristic of a disease.