Repellent to bag pitcher very loudly (4-3)
I believe the answer is:
turn-off
'repellent' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'to bag pitcher very loudly' is the wordplay.
I cannot quite understand how this works, but
'pitcher' could be 'urn' (I've seen this before) and 'urn' is present in the answer.
'to' is found in the answer.
'loudly' could be 'ff' (short for fortissimo - 'very loud' in music) and 'ff' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for turn-off that I've seen before include "Something generating distaste" , "Something eliciting distaste" .)