Claire sold a Banksy piece back - she resents not winning it! (3,5)
I believe the answer is:
bad loser
'she resents not winning it' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'claire sold a banksy piece back' is the wordplay.
'piece' indicates a hidden word.
'back' says the letters should be written backwards.
'resoldab' can be found hidden inside 'claire sold a banksy'.
'resoldab' backwards is 'BAD LOSER'.
Can you help me to learn more?
(Other definitions for bad loser that I've seen before include "Person who can't accept defeat gracefully" , "He lacks grace in defeat" , "Person who cannot accept defeat with grace" .)