duty bound

/ˈdutiˌbaʊnd/
adjective
  1. Obliged to do something because of moral or legal responsibility.
    • As a doctor, she felt duty-bound to help the injured hiker.
    • The witness was duty-bound to tell the truth in court.
    • He considered himself duty-bound to care for his aging parents.
Antonyms
What does "duty bound" mean? | whatsthatwordmean | whatsthatwordmean