定さだまり

noun

rule; custom; established practice

Refers to a settled rule, custom, or fixed way of doing things. Often implies something that has become standard or expected over time. The glosses 'tranquility'/'tranquillity' are rare and likely refer to a state of settled calm; this usage is uncommon in modern Japanese.

• この村むらには古ふるくからの定さだまりがある。

  This village has long-established customs.

• 会かい議ぎの定さだまりに従したがって進しん行こうする。

  We proceed according to the meeting's rules.