commitment

noun:a strong dedication or devotion to a cause, activity, or belief
- Her commitment to environmental activism inspired many volunteers.
noun:a pledge or promise to do something in the future
- She made a commitment to finish the project by the end of the month.
noun:an obligation or duty that one is bound to fulfill
- I can't join you for dinner because I have a prior commitment.
noun:the act of committing, pledging, or engaging oneself
- The signing of the treaty signified the country's commitment to peace.
noun:the action of sending a person to a prison or a mental hospital
- The court ordered his commitment to a psychiatric institution.