Legal Definitions - duty-bound

Definition: Required by legal or moral obligation to do something.

Example: Sarah is duty-bound to attend her sister's wedding as a bridesmaid.

Explanation: In this example, Sarah has a moral obligation to attend her sister's wedding as a bridesmaid. She has made a commitment to her sister and is expected to fulfill her duty. Duty-bound refers to a sense of responsibility or obligation to do something, whether it is required by law or by personal values.