accredited (adj.)youdaoicibaDictYouDict
"furnished with credentials," 1630s, past participle adjective from accredit (v.).
unaccredited (adj.)youdaoicibaDictYouDict
1828, from un- (1) "not" + accredited.
uncredited (adj.)youdaoicibaDictYouDict
1580s, from un- (1) "not" + past participle of credit (v.).