established

adjective
1
respected or given official status because it has existed or been used for a long time
تثبیت‌شده, معتبر, با سابقه
see also old-established, well established
2
well known and respected in a job, etc. that they have been doing for a long time
شناخته شده, معتبر, باسابقه, کهنه‌کار
an established actor
3
made official for a country
رسمی شده