Trick or deceive (4)
I believe the answer is:
fool
I believe this is a double definition.
'trick' is the first definition.
(I've seen this in another clue)
'deceive' is the second definition.
(I know that fool is a more specific form of the action deceive)
(Other definitions for fool that I've seen before include "Jester or silly ass" , "Hoax" , "Dimwit" , "One and his money are soon parted" , "Ass - clown" .)