Whinery output? (4,6)
I believe the answer is:
sour grapes
'output?' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for sour grapes that I've seen before include "Derision of the unattainable" , "Curmudgeonly attitude" , "Belittlement" , "Disparagement of something one can't have oneself" , "Disdain that covers disappointment" .)