Duty is a word that refers to an obligation or responsibility that one must fulfill. However, there are several synonyms for the term "was duty" that can be used to express the same sentiment. Words like obligation, responsibility, commitment, task, assignment, mission, and role are often used interchangeably with duty. These synonyms convey a sense of seriousness and importance in the duty that one has to fulfill. Duties are an integral part of our daily lives, and having synonyms for the term can help us express ourselves better in communication, whether it's at work or in our personal lives.