Disgust concerning dog and relative reaching church (10)
I believe the answer is:
repugnance
'disgust' is the definition.
(I know that repugnance is a type of disgust)
'concerning dog and relative reaching church' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'dog' becomes 'pug' (pug is a kind of dog).
'and' is a charade indicator (letters next to each other).
'relative reaching church' becomes 'nance' (I am not sure about this - if you are sure you should believe this answer much more).
're'+'pug'+'nance'='REPUGNANCE'
Can you help me to learn more?
(Other definitions for repugnance that I've seen before include "Intense disgust" , "Distaste" , "Offended aversion" .)