Like to be seen in church in suit (4)
I believe the answer is:
case
'suit' is the definition.
('case' can be a synonym of 'suit')
'like to be seen in church' is the wordplay.
'like' becomes 'as'.
'to be seen in' indicates putting letters inside.
'church' becomes 'ce' (abbreviation for Church of England**).
'as' put within 'ce' is 'CASE'.
'in' acts as a link.
(Other definitions for case that I've seen before include "Action taken" , "Patient - luggage" , "Detective work" , "suit for trial" , "Police investigation" .)