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Synonyms

well-established

American  
[wel-i-stab-lisht] / ˈwɛl ɪˈstæb lɪʃt /

adjective

  1. permanently founded; settled; firmly set.

    a well-established business; a well-established habit.


well-established British  

adjective

  1. having permanence or security in a certain place, condition, job, etc

    a well-established brand

  2. well-known or validated

    a well-established fact

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of well-established

First recorded in 1700–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

European officials say their countries continue to adhere to well-established agreements over how U.S. bases on their soil can be used, despite Trump’s criticisms.

From The Wall Street Journal • May 8, 2026

Noncitizens are already prohibited from voting in federal elections, but there’s a well-established history of their participation in local ones, including in Vermont and Maryland.

From Los Angeles Times • May 6, 2026

They then tested oral arginine in two well-established Alzheimer's models:

From Science Daily • May 4, 2026

The multiple conversations with reporters undermine well-established norms that the president's "time is precious" and that he "must always use secure communications," said Robert Rowland, a professor of communication studies at the University of Kansas.

From Barron's • Apr. 21, 2026

When early civilizations started pressing reeds to clay tablets, carving figures in stone, and daubing ink on parchment and on papyrus, number systems had already been well-established.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife