disillusioned
adjective /ˌdɪsɪˈluːʒnd/
  /ˌdɪsɪˈluːʒnd/
 - disillusioned (by/with somebody/something) disappointed because the person you admired or the idea you believed to be good and true now seems without value synonym disenchanted
- I soon became disillusioned with the job.
 - I feel utterly disillusioned by his refusal to take any action.
 - Her book is the testimony of a disillusioned woman.
 - Later in life he grew rather disillusioned with communism.
 - They felt bitter and disillusioned by the decision.
 
Oxford Collocations Dictionaryverbs- be
 - feel
 - become
 - …
 
- extremely
 - fairly
 - very
 - …
 
- by
 - with