Remaining dishonest (5)
I believe the answer is:
lying
This clue is a double definition.
'remaining' is the first definition.
(lie can mean to remain or stay)
'dishonest' is the second definition.
(synonyms)
(Other definitions for lying that I've seen before include "Fabrication" , "Not being disturbed" , "Prone; fibbing" , "Dishonest" , "Telling untruths" .)