Instruct confused cheat (5)
I believe the answer is:
teach
'instruct' is the definition.
(I know that instruct can be written as teach)
'confused cheat' is the wordplay.
'confused' indicates anagramming the letters.
'cheat' is an anagram of 'TEACH'.
(Other definitions for teach that I've seen before include "Convey knowledge to students" , "show" , "Tutor" , "Blackbeard" , "Impart knowledge" .)