Condone (6)
I believe the answer is:
excuse
'condone' is the definition.
(I know that condone can be written as excuse)
This is all the clue.
(Other definitions for excuse that I've seen before include "Upstanding community members" , "Make allowances for; forgive" , "Defence, justification" , "Pardon, or release from obligation" , "Let off the hook" .)