Request or supplication (4)
I believe the answer is:
plea
This clue is a double definition.
'request' is the first definition.
(I know that plea is a type of appeal)
'supplication' is the second definition.
(I know that supplication can be written as plea)
(Other definitions for plea that I've seen before include "Leap (anag.)" , "Lightly char" , "Negotiation between prosecutor and defendant" , "(and 14) Enjoyment - gratification" , "Heartfelt request" .)