Duty
Duty noun - Something one must do because of prior agreement.
Usage example: I must obey the call of duty and serve my country
Cite this Source
Waiver and Duty. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/duty/waiver
Duty & Waiver. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/duty/waiver>.
Waiver or Duty. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/duty/waiver.
Google Ngram Viewer shows how "duty" and "waiver" have occurred on timeline