Bona Fides is a Latin phrase meaning 'good faith' or 'TRUSTWORTHINESS'. It is often used to refer to the CREDENTIALS, qualifications, and TRUSTWORTHINESS of an individual or organization. SINCERITY (9 letters) is a quality of being honest and truthful in one's actions and words. CREDENTIALS (11 letters) are documents that prove a person's qualifications or achievements. Together, these three terms can be used to describe the TRUSTWORTHINESS of an individual or organization.