acerbate acerbate /ˈæsərˌbeɪt/

verb

1. Make sour or bitter  ( acerbate )
   make sour or bitter
   
2. Cause to be bitter or resentful  ( acerbate , envenom [Archaic] , embitter )
   cause to be bitter or resentful
    These injustices embittered her even more
   These injustices embittered her even more