Nothing more needed to make one turn up with a cry of disgust (6)
I believe the answer is:
enough
'nothing more' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'one turn up with a cry of disgust' is the wordplay.
'turn up' shows that the letters should be reversed in order.
'with' means one lot of letters go next to another.
'a cry of disgust' becomes 'ugh' (expression of disgust).
'one' back-to-front is 'eno'.
'eno'+'ugh'='ENOUGH'
'needed to make' is the link.
Can you help me to learn more?
(Other definitions for enough that I've seen before include "Adequately" , "As much as desired" , "Stop right now!" , "Satisfactory quantity" , "This'll do" .)