adj. 25B6; adjective ESTABLISHED, long-standing, committed, dyed-in-the-wool, through and through; staunch, loyal, faithful, devoted, dedicated, steadfast; habitual, compulsive, persistent; unapologetic, unashamed, inveterate, chronic, incurable; informal deep-dyed, card-carrying.
CONFIRMED
Meaning of CONFIRMED in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012