Quit, rejecting good sticky stuff (5)
I believe the answer is:
resin
'sticky stuff' is the definition.
(sticky substance)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for resin that I've seen before include "Sticky stuff as from pine tree" , "component of varnish" , "Myrrh, for instance" , "eg Rosin" , "Material exuded from tree" .)