Supporter upset with corrupt trial of judges (8)
I believe the answer is:
arbitral
'supporter upset with corrupt trial of judges' is the definition.
I can't tell whether this definition defines the answer.
'supporter upset with corrupt trial' is the wordplay.
'supporter' becomes 'bra' (a bra gives support to breasts).
'upset' shows that the letters should be reversed in order.
'with' means one lot of letters go next to another.
'corrupt' indicates an anagram (a corrupted spelling of the word).
'bra' reversed gives 'arb'.
'trial' is an anagram of 'itral'.
'arb'+'itral'='ARBITRAL'
Can you help me to learn more?
(Other definitions for arbitral that I've seen before include "of judges in Scotland" , "Relating to independent settling of disputes" , "Relating to dispute-settling" .)