Deceive, with a bit of luck, in a dodgy deed (6)
I believe the answer is:
delude
'deceive' is the definition.
(I know that deceive can be written as delude)
'bit of luck in a dodgy deed' is the wordplay.
'bit of luck' becomes 'lu' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'a dodgy' indicates an anagram (a dodgy or wrong order of the letters).
'deed' with letters rearranged gives 'dede'.
'lu' inserted within 'dede' is 'DELUDE'.
'with a' is the link.
Can you help me to learn more?
(Other definitions for delude that I've seen before include "Lead into false belief" , "Kid" , "Cause to believe something untrue, deceive" , "Cause to believe a lie" , "Deceive, lead on" .)