Resentful reporter managed singers (9)
I believe the answer is:
rancorous
'resentful' is the definition.
(synonyms)
'reporter managed singers' is the wordplay.
I cannot quite see how this works, but
'managed' could be 'ran' (both can mean organised or was in charge of) and 'ran' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rancorous that I've seen before include "Resentful, bitter" , "spiteful?" , "Acrimonious" , "Showing bitter resentment" .)