Appease, pacify (7)
I believe the answer is:
placate
This clue is a double definition.
'appease' is the first definition.
(synonyms)
'pacify' is the second definition.
(synonyms)
(Other definitions for placate that I've seen before include "Make calm, conciliate" , "Pale cat could pacify" , "Calm, pacify, appease" , "'Pacify, appease (7)'" , "Mollify, appease" .)