Overlooked bidder on giving piece back (7)
I believe the answer is:
ignored
'overlooked' is the definition.
(I've seen this before)
'bidder on giving piece back' is the wordplay.
'piece' indicates a hidden word.
'back' says the letters should be written in reverse.
'derongi' is hidden in the letters of 'bidder on giving'.
'derongi' reversed gives 'IGNORED'.
(Other definitions for ignored that I've seen before include "Took no notice of" , "Snubbed" , "cast aside" , "overlooked" , "Disregarded intentionally; failed to consider" .)