Where does “寝取る” come from?

寝取る (Japanese) comes from Japanese 寝, from Middle Chinese 寢.

寝取る (Japanese): to have sex with (someone else's spouse or lover); to be in cahoots with (an adulterous, cuckolding or cheating person)

Definitions

  1. to have sex with (someone else's spouse or lover); to be in cahoots with (an adulterous, cuckolding or cheating person)

Ancestry of “寝取る”, step by step

寝取る traces back through two separate lines of ancestry.

via Japanese 寝

StepLanguageWordMeaning
1Japanese寝sleep, sleeping; to sleep
2Middle Chinese寢—

via Japanese 取る

StepLanguageWordMeaning
1Japanese取るto steal; take, pick up; to take
Every word from Middle Chinese 寢 →Every word from Japanese 寝 →