officially recognized as meeting the essential requirements, as of academic excellence: accredited schools.
provided with official credentials, as by a government: an accredited diplomatic representative.
accepted as authoritative: an accredited theory.
Origin of accredited
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
"furnished with credentials," 1630s, past participle adjective from accredit (v.).
Online Etymology Dictionary, © 2010 Douglas Harper