Formal declaration by a Designated Accrediting Authority (DAA) or Principal Accrediting Authority (PAA) that an information system is approved to operate at an acceptable level of risk, based on the implementation of an approved set of technical, managerial, and procedural safeguards.
Merriam-Webster Online Thesaurusaccreditation (noun)
the granting of power to perform various acts or duties
SYNONYMS:accreditation, authorization, delegation, empowerment, license ( licence), mandate
RELATED WORDS:commendation, consignment, entrustment; facilitation, fostering, promotion; commanding, directing, ordering