What is the quality of truthfulness, sincerity, or frankness?

The quality of truthfulness, sincerity, or frankness is best captured by honesty. Honesty means being truthful in your words and actions, which encompasses the traits of speaking the truth and being open about one's thoughts and beliefs. It is a fundamental ethical principle that builds trust between individuals in both personal and professional contexts. When someone is honest, they present themselves and their intentions in a clear and direct manner, leading to better communication and reliability in relationships.

Integrity, while related, refers more to the adherence to moral and ethical principles, which includes being honest but also encompasses a broader spectrum of behaviors, such as fairness and wholeness. Dependability relates to being reliable and consistent in performing duties or fulfilling commitments, and work ethic pertains to the values one upholds regarding diligence and commitment to tasks. These terms, while important, do not specifically define the quality of being truthful, making honesty the most accurate choice in this case.