Prestigious award excited reformed trio (5,2,5)
I believe the answer is:
order of merit
'prestigious award' is the definition.
The definition suggests a singular noun which matches the answer.
'excited reformed trio' is the wordplay.
'excited' indicates an anagram.
'reformed'+'trio'='reformedtrio'
'reformedtrio' with letters rearranged gives 'ORDER OF MERIT'.
Can you help me to learn more?
(Other definitions for order of merit that I've seen before include "(Award for) people of distinction" , "First, second, third" , "UK honour" , "ranked by their results?" , "exclusive club" .)