The most common and most likely answer to this crossword clue is the 10 letter word PROSECUTOR
I've seen this crossword clue in Financial Times
P
R
O
S
E
C
U
T
O
R
More clues leading to the result PROSECUTOR
- Court poser, fancy legal official
- Writings hacked by alternative lawyer
- Counsel uses pot scourer recklessly
- POTUS gets mad with core Republican attorney
- Court poser upset court official
- DA quietly got up, then misled court?
- European court dissolves upon experts identifying man after conviction
- Written statements followed by censored alternative from lawyer
- District attorney writing before court is out of order
Buddy explains!

The straight part
We know that "legal official" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case legal official = prosecutor.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 PROSECUTOR mean?
PROSECUTOR noun- A prosecuting attorney.
- A person, as a complainant, victim, or chief witness, who institutes prosecution in a criminal proceeding.