Oughtness is a noun that describes the quality of something being morally right or necessary, or the feeling of obligation to do something. Synonyms for oughtness include duty, responsibility, obligation, necessity, requirement, and imperative. These words all convey a sense of having a moral or ethical obligation to do something, whether it's fulfilling a job, making a decision, or taking action on a particular issue. Each synonym may have slightly different connotations or shades of meaning, but they all ultimately point to the idea that there are certain things we must do in order to uphold our values and responsibilities as individuals or members of society.