My brother said “How do you say hello on the phone in Japanese?”. I said “Moshi moshi.”

He said “Well, what does that mean exactly?”

I said “It means hello.”

He said, “It must means something specifically. What does moshi mean?”

I had no idea so he pulled out his Smart phone and looked it up. He told me moshi means “to say.”

Of course. I felt like a doof. Moshi comes from mosimasu, the humble form of to say or to tell.

I am learning Japanese from my brother, who knows no Japanese.