Leave the wrong impression (10)
I believe the answer is:
permission
'leave' is the definition.
(leave can mean permission to do something)
'wrong impression' is the wordplay.
'wrong' indicates anagramming the letters.
'impression' with letters rearranged gives 'PERMISSION'.
'the' acts as a link.
(Other definitions for permission that I've seen before include "Visa, eg" , "Green light" , "Allowance" , "Leave" , "Consent, authorisation" .)