Rule out enticement (4)
I believe the answer is:
lure
'enticement' is the definition.
(synonyms)
'rule out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'rule' is an anagram of 'LURE'.
(Other definitions for lure that I've seen before include "Attraction" , "Enticement" , "Attract with bait" , "'Decoy, bait (4)'" , "draw" .)