Half-heartedly embarrass Catholic in Church Trust (8)
I believe the answer is:
credence
'trust' is the definition.
(I've seen this before)
'half-heartedly embarrass catholic in church' is the wordplay.
I cannot quite see how this works, but
'heartedly' could be 'ed' (I've seen this in other clues) and 'ed' is found within the answer.
'catholic' could be 'c' (abbreviation as in RC for Roman Catholic) and 'c' is present in the answer.
'church' could be 'ce' (abbreviation for Church of England) and 'ce' is present in the answer.
The remaining letters 'ren' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
(Other definitions for credence that I've seen before include "Sort of table" , "Belief; type of table" , "Feeling that something is true" , "Faith or belief placed in something" , "that creates confidence" .)