Credential
(a.) Giving a title or claim to credit or confidence; accrediting.
(n.) That which gives a title to credit or confidence.
(n.) Testimonials showing that a person is entitled to credit, or has right to exercise official power, as the letters given by a government to an ambassador or envoy, or a certificate that one is a duly elected delegate.
Similar Words:
Credence Credenda Credendum Credent Credential Del credere Miscredent