Indeed, it is a Japanese word used to say goodbye. Well known is the closing phrase spoken by the actor of Austrian origin, Arnold Schwarzenegger, embodying the star of Terminator in the year 1991, when he said 60; Sayonara baby 60; up to la vista, baby. It is also a type of sandals or flip-flops, which is a shoe that is usually used to go to the beach or to the pool.