The most common and most likely answer to this crossword clue is the 4 plus 5 plus 7 letter word LINE ONE’S POCKETS
I've seen this crossword clue in Independent
L
I
N
E
O
N
E
â
€
™
S
P
O
C
K
E
T
S
Buddy explains!
The straight part
We know that "Deny work to the tailor/to amass wealth?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case deny work to the tailor/to amass wealth? = line one’s pockets.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.