Fashionable church feature dean primarily motivated (8)
I believe the answer is:
inspired
'motivated' is the definition.
(inspire can mean to motivate or encourage)
'fashionable church feature dean primarily' is the wordplay.
'fashionable' becomes 'in' (in can mean fashionable or trendy).
'church feature' becomes 'spire' (spire is part of a church building).
'primarily' says to take the initial letters.
The initial letter of 'dean' is 'd'.
'in'+'spire'+'d'='INSPIRED'
(Other definitions for inspired that I've seen before include "Unexpectedly accurate (guess)" , "Having a suddenly brilliant idea" , "Drew in" , "Encouraged" , "Enthused" .)