Person kissing reverend who would muddle his words (7)
I believe the answer is:
spooner
'kissing reverend who would muddle his words' is the definition.
The definition suggests a singular noun which matches the answer.
'person' is the wordplay.
I cannot quite see how this works, but
'person' could be 'one' (I've seen this in other clues) and 'one' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for spooner that I've seen before include "Initial-transposing clergyman" , "One known for speech transpositions" , "Tongue-tied man" , "Original transposer of initial letters in speech" , "Revd W.A.- was famed for his errors in speech" .)