The most common and most likely answer to this crossword clue is the 9 letter word LITIGIOUS
I've seen this crossword clue in Independent
L
I
T
I
G
I
O
U
S
Buddy explains!
The straight part
We know that "with a fondness for suits" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with a fondness for suits = litigious.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 LITIGIOUS mean?
LITIGIOUS adjective- Of or relating to litigation.
- Inclined to engage in lawsuits.
- Argumentative or combative.