オーソドックス

na-adjective

orthodox; conventional; standard

Used for methods, ideas, styles, or approaches that are traditional, established, and not experimental. Often carries a positive nuance of being reliable and time-tested.

• 彼かれの治ち療りょう法ほうはとてもオーソドックスだ。

  His treatment method is very orthodox.

• オーソドックスな方ほう