Make (a deal, eg) more attractive or acceptable (7)
I believe the answer is:
sweeten
(Other definitions for sweeten that I've seen before include "temper" , "Appease" , "Make less bitter" , "put in sugar" , "Make more palatable" .)
I believe the answer is:
sweeten
(Other definitions for sweeten that I've seen before include "temper" , "Appease" , "Make less bitter" , "put in sugar" , "Make more palatable" .)