Vulgar noise of a fledgling (5)
I believe the answer is:
cheap
'vulgar' is the definition.
(synonyms)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for cheap that I've seen before include "Not expensive - trashy" , "A snip" , "Inexpensive or tasteless" , "Vulgar" , "Budget -cheesy" .)