Unappealing church left without members (7)
I believe the answer is:
armless
'without members' is the definition.
('member' can be 'arm' (member can mean a limb) so maybe 'without members' can be ''armless')
'unappealing church left' is the wordplay.
I cannot really see how this works, but
'left' could be 'arm' (left arm) and 'arm' is present in the answer.
The remaining letters 'less' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for armless that I've seen before include "Short of members" , "to equip? Not so" .)