Cryptic crossword clue
Criminal‘s old mate wrong — 10 isn’t being clobbered 12

The most common and most likely answer to this crossword clue is the 12 letter word EXTORTIONIST

I've seen this crossword clue in The Guardian
E
X
T
O
R
T
I
O
N
I
S
T

Buddy explains!

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 EXTORTIONIST mean?

EXTORTIONIST noun
  1. Someone who extorts; an extortioner.

Latest crossword clues with full explanations