You’ve heard it in every anime phone scene: もしもし (moshi moshi). Your textbook probably filed it under “hello.”
But here’s the thing that makes this word wonderful: as a native speaker, I have never once said moshi moshi to someone’s face. It lives exclusively inside phone calls — and the reason why involves Meiji-era telephone operators, a grammar fossil, and (depending on who you ask) foxes.
Quick Answer
もしもし (moshi moshi) is the standard way to say “hello?” when answering or checking a phone call in Japanese. It comes from 申します (moushimasu) — the humble verb “to speak” — so it literally means something like “I’m about to speak, I’m about to speak.” It is never used as a face-to-face greeting, and it’s considered too casual for business calls.
Remember two things: phone-only, and not at work. Now the fun parts.
What Moshi Moshi Literally Means
Moshi moshi is a worn-down repetition of 申し (moushi), from the humble verb 申す (mousu) — “to say,” used when you are the one speaking to someone you respect. So the phrase originally announced: “I’m going to say something now.”
Why announce that at all? Because early telephones needed it. Calls crackled, lines dropped, and you couldn’t see the other person. Moshi moshi worked as a sound check dressed as a greeting: “I’m speaking — can you hear me?”
That’s why, even today, moshi moshi isn’t really “hello.” It’s closer to “are we connected?” — which explains every other use of it you’ll ever hear.
The Meiji-Era Backstory
The story, as it’s usually told in Japan: when telephone service began in the 1890s, callers needed a standard way to hail the operator and the other party. Early users reportedly barked おいおい (oi oi) — “hey, hey!” — which is about as charming as it sounds. The humble 申し上げます (moushiagemasu, “I humbly speak”) circulated among operators, and over years of daily use it sanded down into the snappy moshi moshi.
I can’t personally vouch for every detail — this is one of those origin stories everyone in Japan half-knows — but the linguistic trail (mousu → moushi → moshi moshi) is solid, and it explains the phrase’s oddly humble DNA.
The Fox Legend 🦊
Now the part everyone loves. A popular piece of Japanese folklore claims that yokai — especially foxes (kitsune) — can’t say moshi twice. A ghost or fox impersonating a human could manage one moshi, but the repetition would expose them. So saying moshi moshi supposedly proves you’re human.
Is this the real origin? Almost certainly not — it’s folk etymology layered on after the fact. But it’s so beloved that it keeps getting retold, and honestly, “anti-fox authentication protocol” is the best description of a phone greeting I can imagine.
Why Moshi Moshi Is Banned at Work
Here’s the twist that surprises even advanced learners: in Japanese business calls, moshi moshi is considered rude — or at least unpolished, like answering the office phone with “yo.”
The etiquette logic: moshi moshi is casual and slightly abrupt, so business Japanese replaces it entirely. What natives actually say:
| Situation | What you say | Romaji |
|---|---|---|
| Answering at work | はい、〇〇株式会社です | hai, [company] desu |
| Caller is a client | お世話になっております | osewa ni natte orimasu |
| Answering a friend | もしもし? | moshi moshi? |
| Unknown number | はい、もしもし? | hai, moshi moshi? |
| Line went weird | もしもし? 聞こえますか? | moshi moshi? kikoemasu ka? |
That phrase お世話になっております (“we are in your care/debt”) is its own untranslatable rabbit hole — it belongs to the same formal universe as honorifics, which I map out in my complete guide to Japanese honorifics.
New employees in Japan genuinely get trained out of saying moshi moshi during their first weeks of phone duty. It’s a small but real rite of passage.
The Secret Second Use: The Human Connection Check
Remember how moshi moshi really means “are we connected?” Natives extend that meaning beyond phones in one playful way: when someone spaces out mid-conversation, you can wave a hand in front of their face and say もしもーし? (moshi mooshi?) — “hello-o? Anyone home?”
This is the only face-to-face moshi moshi you’ll ever hear, and it works because it’s a phone word. You’re teasing your friend that the line to their brain dropped.
What About Unwanted Calls?
One practical scenario: you answer with moshi moshi and it’s a telemarketer. Japanese sales callers can be marathon-level persistent, and hanging up mid-sentence feels brutal even to us. The native move is a firm 結構です (kekkou desu — “I’m fine, no thank you”) before politely ending the call.
The art of the soft-but-final refusal is a survival skill in Japanese life — I wrote a whole field guide in How to Say No in Japanese, and it applies to phone pests beautifully.
FAQ
What does moshi moshi actually mean?
It derives from 申します (moushimasu), the humble verb for “to speak,” so it literally means “I’m about to speak.” Functionally it’s “hello?” — but only on the phone, where it doubles as a connection check.
Can you say moshi moshi in person?
Not as a greeting — natives never do this. The one exception is the playful もしもーし? said while waving a hand at someone who’s spaced out, teasing them for “dropping the call.”
Is moshi moshi rude?
To friends and family, not at all — it’s the standard. In business calls it’s considered too casual; answer with はい、〇〇です (hai, [name] desu) and use お世話になっております with clients.
Why do Japanese people say moshi moshi twice?
The repetition dates to early telephony, where doubled words confirmed the line was working. The famous folklore bonus: foxes and ghosts supposedly can’t say moshi twice, so the repetition “proves” you’re human.
What do I say if the call is breaking up?
もしもし? 聞こえますか? (moshi moshi? kikoemasu ka?) — “hello? can you hear me?” This is moshi moshi’s original job: checking the connection.
💬 One Honest Tip From a Native
Moshi moshi is easy — you’ll nail it on day one. What actually trips learners up is the rest of the phone call: Japanese with no faces, no gestures, no subtitles. Phone Japanese is widely considered the final boss of listening practice, and the only way to beat it is reps with a patient human on the other end.
→ Find your sparring partner here: How to Find a Japanese Tutor Online
Written by Rei — native Japanese speaker. Audio examples coming soon.
Last updated: July 2026