embittered
adjective
[ ɪmˈbɪtəd ]
• angry or resentful at having been treated unfairly.
• "he died an embittered man"
embitter
verb
• make (someone) feel bitter or resentful.
• "he didn't let illness and divorce embitter him"
Similar:
make bitter,
make resentful,
sour,
anger,
poison,
envenom,
make rancorous,
jaundice,
antagonize,
vex,
frustrate,
alienate,
disillusion,
disaffect,
dissatisfy,
discourage,
rankle,