Assists a felon (5)
I believe the answer is:
abets
'assists a felon' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for abets that I've seen before include "Helps (someone to commit crime)" , "Assists in wrongdoing" , "Aids in wrong-doing" , "Gives support" , "Assists dealer, say" .)