an established custom

It was an established custom, the Sunday morning promenade, in all the cities of the land.

Casting doubt on established customs would be to no one's advantage.

Three taxis had gone past and I'd tried to stop them because sharing was an established custom but they were obviously full.

Even with death a few inches away it will respond to established custom.

At issue is an established, and legal, political custom called "pay to play."

And very soon it grew to be an established custom that he should have dinner with her.

Islam was used to reinforce the political and social structures of the state although many established customs were maintained.

In 1635, a law required sankin-kōtai, which was already an established custom.

The Constitution provides for freedom of religion subject to established customs.

That is a radical change in established custom and practice.