Acokoinonia is sex which occurs without any passion or desire. It comes from the Greek words akon, meaning unwilling, and koinonia, meaning community, which in turn comes from the Greek word koinos, which translates to “shared in common.”
While it’s unclear how the term originated, J.E. Schmidt was one of the first people to define acokoinonia in his 1967 sexual dictionary, “Lecher’s Lexicon.”