Sounds like dabblers and charlatans (6)
I believe the answer is:
quacks
'charlatans' is the definition.
(quack is a kind of charlatan)
I can't explain the rest of the clue.
(Other definitions for quacks that I've seen before include "Makes a noise like a duck" , "Bad doctors or duck sounds" , "Duck sounds or dud doctors" , "Makes sounds like a duck" , "Ducks' noises" .)