Base or dishonourable (7)
I believe the answer is:
ignoble
I believe this clue is a double definition.
'base' is the first definition.
(both can mean dishonourable or shameful)
'dishonourable' is the second definition.
(associated in meaning)
(Other definitions for ignoble that I've seen before include "Completely lacking in character or purpose" , "Not worthy in character or purpose" , "'Base, dishonourable (7)'" , "Inferior" , "Base - in globe (anag)" .)