ameliorate
ame·lio·rate
/əˈmiːljəˌreıt/ verb , -rates, -rat·ed, -rat·ing [ + obj ]
formal : to make (something, such as a problem) better, less painful, etc.
trying to ameliorate the suffering of people who have lost their jobs
This medicine should help ameliorate the pain.
ame·lio·ra·tion /əˌmiːljəˈreıʃən/ noun [ noncount ]