"long-established tradition" is a correct and commonly used phrase in written English.
It can be used to refer to a custom, practice, or belief that has been in existence for a long time and is often passed down from generation to generation. Example: The annual Thanksgiving feast was a long-established tradition in their family, with each member contributing a dish and sharing stories of past gatherings. Example: The school's long-established tradition of a holiday musical performance continued to delight students and parents alike every year.
He pointed out that Wisconsin and its university has a long-established tradition of non-partisan academic freedom, established for more than a century.
Burano has a long-established tradition of needle-lace making, though precise historical records are lacking.
According to long-established tradition, the history of astronomy in ancient China can be traced back before 2000 bce.
Parting from the long-established tradition of such events, the inaugural Eugene Mirman Comedy Festival began with the awards ceremony.
IL FORNO, a warm, welcoming new restaurant in Port Washington, is the latest evidence that a long-established tradition is maintaining its vitality on the Island.
At Trollhaugen resort in Dresser, Wis., less than an hour from Minneapolis, skiing into the wee hours on a Friday night is a long-established tradition.
But it was an entirely different world from the utilitarian atmosphere of Manchester, with long-established traditions.
"Hunting and sportsmanship are long-established traditions here, and people of faith founded the commonwealth and continue to live here.
The acquisition systems described above are found mostly in countries with long-established traditions of reading, research, libraries, and book trade.
Along with tearing apart long-established traditions and geographic common sense, university presidents everywhere have sold out many student-athletes, with the accent on the student, by putting them in travel-challenged situations against opponents that offer little competitive attraction.
Matters are not made clearer by reference to the value of long-established traditions because the question remains: which ones? Conservatives are not generally noted for vociferous defence of labour movement traditions – the well-established tradition, say, that one should not cross a picket line – whereas they tend to be quite keen on those associated with the monarchy.
