English raise a doubt about right for royal attendant (7)
I believe the answer is:
equerry
'royal attendant' is the definition.
(I've seen this before)
'english raise a doubt about right' is the wordplay.
'english' becomes 'E' (abbreviation).
'raise a doubt' becomes 'query' (to query is to question or doubt).
'about' is an insertion indicator.
'right' becomes 'r' (common abbreviation).
'query' going around 'r' is 'querry'.
'e'+'querry'='EQUERRY'
'for' acts as a link.
(Other definitions for equerry that I've seen before include "Personal attendant of a member of the royal family" , "Royal aide" , "Officer of the British royal household" , "Attendant in royal household" , "Royal family official" .)