Where does “お構いなく” come from?

お構いなく (Japanese) comes from Japanese お, from Middle Chinese 惡.

お構いなく (Japanese): please don't fuss over me; don't go to any trouble; don't bother

Definitions

  1. please don't fuss over me; don't go to any trouble; don't bother

Ancestry of “お構いなく”, step by step

お構いなく traces back through 3 separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanese諾 yes, alright, okay; オ a sign used in some...
2Middle Chinese

via Japanese なく

StepLanguageWordMeaning
1Japaneseなく

via Japanese 構い

StepLanguageWordMeaning
1Japanese構いusually prefixed with care, concern, attention
Every word from Middle Chinese Every word from Japanese