Charged with an offence (7)
I believe the answer is:
accused
'charged with an offence' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for accused that I've seen before include "Indicted" , "Person being charged" , "Defendant in a criminal proceeding" , "Defendant appearing on a criminal charge" , "Levelled a charge against" .)