well-established

comparative more well-established · superlative most well-established · alternative well established

1. Having been established for a long period of time.

   The school has a number of well-established traditions.

   3 more examples

   This company is probably the most well-established in the industry.

   The Shen-Kan-Ning Border Region will serve as an example of political practice during the war years. This Border Region, with a population of about one and a half million people in the three provinces (Shensi, Kansu, and Ninghsia), was by no means a typical example of the liberated areas. As the original Northwest base of the CCP and the area in which the Party Center was located, it was actually a "model" area of CCP control. However, precisely because of its well-established Party presence and its relative security from Japanese attack, the Shen-Kan-Ning Border Region set the pattern of government for all of the liberated areas.

   1967, James R. Townsend, “The Development of CCP Doctrine, 1921–1945”, in Political Participation in Communist China, Berkeley, Cali.: University of California Press, published 1969, →LCCN, →OCLC, page 58

   ‘There’s been a continuation of what was a well-established pattern of protests,’ [Jonathan Hill] explains.

   2018 October 26, Chris Fitch, “Reintroduction of military conscription in Morocco”, in Geographical, archived from the original on 27 Feb 2021

   Synonyms: long-established

2. Well-known.

   It is well established that this methodology is problematic.