Shunned escort, said to be upset (10)
I believe the answer is:
ostracised
'shunned' is the definition.
(I've seen this before)
'escort said to be upset' is the wordplay.
'to be upset' indicates anagramming the letters (I've seen 'are upset' mean this).
'escort'+'said'='escortsaid'
'escortsaid' with letters rearranged gives 'OSTRACISED'.
(Other definitions for ostracised that I've seen before include "excluded from society" , "banished?" , "Sent to Coventry" , "out in the cold" , "shunned" .)