embittering
ɪmˈbɪtə
ɛmˈbɪtə
verb
make (someone) feel bitter or resentful.
he didn’t let illness and divorce embitter him
make bitter,make resentful,sour,anger,poison,envenom,make rancorous,jaundice,antagonize,vex,frustrate,alienate,disillusion,disaffect,dissatisfy,discourage,rankle