Delicate point raised in church extremely tetchily (6)
I believe the answer is:
nicety
'delicate point' is the definition.
'nicety' can be an answer for 'point' (I have seen 'Subtle point' mean 'nicety' so perhaps 'point' could also mean 'nicety'). I'm unsure of the 'delicate' bit.
'raised in church extremely tetchily' is the wordplay.
'raised' shows that the letters should be reversed in order (going up in a down clue).
'church' becomes 'CE' (Church of England).
'extremely' means to remove the middle letters (only the extremes of the word are used).
'tetchily' with its centre removed is 'ty'.
'in' in reverse letter order is 'ni'.
'ni'+'ce'+'ty'='NICETY'
Can you help me to learn more?
(Other definitions for nicety that I've seen before include "Degree of precision" , "Minute distinction; subtlety" , "Judged to a . . . . . . - with precision" , "Fastidiousness" , "A detail of etiquette" .)