Misinform (3,2)
I believe the answer is:
lie to
'misinform' is the definition.
(to lie to someone is to misinform them)
This is the entire clue.
(Other definitions for lie to that I've seen before include "See 10 Across" , "Become stationary (naut.)" , "Remain motionless" , "(Of a ship) come almost to a stop going into the wind" , "ship's to show no sign of movement" .)