Corruptible (5)
I believe the answer is:
venal
'corruptible' is the definition.
(I know that corruptible can be written as venal)
This is the entire clue.
(Other definitions for venal that I've seen before include "Corrupt, dishonest" , "Capable of being corrupted" , "Motivated by bribery" , "Susceptible to bribery" , "'Corrupt, open to bribery (5)'" .)