meliorate meliorate /ˈmiːlɪəˌreɪt/

verb

1. Get better  ( ameliorate , meliorate , better , improve )
   get better
    The weather improved toward evening
   The weather improved toward evening
   
2. To make better  ( ameliorate , meliorate , better , amend , improve )
   to make better
    The editor improved the manuscript with his changes
   The editor improved the manuscript with his changes