Double clues rejected (4)
I believe the answer is:
spit
'double' is the definition.
(I've seen this before)
'clues rejected' is the wordplay.
'clues' becomes 'tips'.
'rejected' says the letters should be written in reverse.
'tips' backwards is 'SPIT'.
(Other definitions for spit that I've seen before include "Eject from mouth" , "Eject saliva - roasting rod" , "little light rain" , "turning means of 8 [COOKING]" , "Narrow strip of land projecting into the sea" .)