How to say "duly" in Japanese

• よしなに
  adverbCovers 'duly' in the sense of 'properly, suitably, as deemed fitting', but it is a dated term, so it is seldom the word you want; its core meaning is 'as you see fit'.
• 晴れてはれて
  adverbA less common word, it covers 'duly' only in the sense of 'formally, openly, publicly', as when a status or position is publicly recognized; it does not mean 'properly' or 'as expected'.
  ２人ふたりは今いまはれて夫婦ふうふだ。↗

  They are now man and wife duly married.

Neither word is a common rendering of 'duly': 「よしなに」, a dated term, means 'suitably, as you see fit', while 「晴れて」 matches 'duly' only in the sense of 'formally, publicly, openly'.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• よしなにsuitably
• 晴れてはれてopenly