Hi, curates are upset with the Holy Sacrament (9)
I believe the answer is:
eucharist
'the holy sacrament' is the definition.
('Eucharist' can be a synonym of 'holy sacrament')
'hi curates are upset' is the wordplay.
'are upset' is an anagram indicator.
'hi'+'curates'='hicurates'
'hicurates' anagrammed gives 'EUCHARIST'.
'with' is the link.
(Other definitions for eucharist that I've seen before include "host" , "Mass" , "Holy Communion" , "church service" , "Consecrated bread" .)