The most common and most likely answer to this crossword clue is the 7 letter word PUNSTER
I've seen this crossword clue in The Sunday Telegraph
P
U
N
S
T
E
R
More clues leading to the result PUNSTER
- Joker's son taken in by client
- Humorist’s better jokes finally gaining acceptance
- Joker is better when keeping sarcasm to a minimum
- Last of clues penned by better user of wordplay
- Ordinary patron’s butt of gags halfway through for comedian
- Seller initially taken in by customer, a joker
- Humorist better touring the South
- Setter occasionally having ‘regular’ about stumped at first?
- Screwball erupts about England's premier humorist
- Football kicker keeps close to this joker
Buddy explains!

The straight part
We know that "user of wordplay" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case user of wordplay = punster.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 PUNSTER mean?
PUNSTER noun- A person who makes puns.