Where does “正反対” come from?

正反対 (Japanese) comes from Japanese 正, from Japanese 正し — accurate, authentic, correct.

正反対 (Japanese): exact opposite; contrary

Definitions

  1. exact opposite; contrary

Ancestry of “正反対”, step by step

正反対 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1JapaneseA number of ten-duodecillion in modern Japanese...
2Japanese正しaccurate, authentic, correct

via Japanese 反対

StepLanguageWordMeaning
1Japanese反対opposed
Every word from Japanese 正しEvery word from Japanese