duty-bound
adjectiveUK /ˈdjuːti baʊnd/
US /ˈduːti baʊnd/
Feeling like you must do something because it is the right thing to do.
She felt duty-bound to help her little brother with his homework.
RELATED WORDS
OTHER MEANINGS
2. Required by law or by a rule to do something.
The guard was duty-bound to check every visitor's badge.
3. Having to do something because of your job or role.
As team captain, he was duty-bound to attend every practice.
4. Feeling you owe it to someone to act in a certain way.
They were duty-bound to thank the neighbors who helped after the storm.