Antoine sacked Boris for example (7)
I believe the answer is:
etonian
'boris for example' is the definition.
I can't judge whether this defines the answer.
'antoine sacked' is the wordplay.
'sacked' indicates anagramming the letters.
'antoine' is an anagram of 'ETONIAN'.
Can you help me to learn more?
(Other definitions for etonian that I've seen before include "One educated at famous public school" , "English student" , "Public school pupil" , "Pupil at posh English school" , "Public school boy" .)