Scam-artist makes commotion and jeers endlessly (9)
I believe the answer is:
racketeer
'scam-artist' is the definition.
I can't judge whether this defines the answer.
'commotion and jeers endlessly' is the wordplay.
'commotion' becomes 'racket' (I've seen this in another clue).
'and' says to put letters next to each other.
'endlessly' says to take the centre (the ends of the words are removed).
The central letters of 'jeers' are 'eer'.
'racket'+'eer'='RACKETEER'
'makes' is the link.
Can you help me to learn more?
(Other definitions for racketeer that I've seen before include "Fraudulent dealer" , "Criminal trader" , "Capone, for one" , "fraudster" , "someone to make a dodgy deal?" .)