How to Say “Hello” in Japanese Slang

やっほー
yahhooslang, playful
A common slang "hello" in Japanese is やっほー (yahhoo), a cheerful greeting like "yo-ho". Friends also say ちーっす (chiissu) and おっす (ossu).
Meaning: casual greeting (phrase)

Ways to say it

“hello” in Japanese
Japanese Romanization Note
やっほー yahhoo slang, playful
ちーっす chiissu slang, short
おっす ossu slang, mostly male

やっほー (yahhoo) is light and used by many speakers, including women. ちーっす (chiissu) is a clipped form of こんにちは (konnichiwa) heard among young men. おっす (ossu) is a short, strong greeting between friends.

Is there a formal and an informal way to say it?

Use these only with friends of your age. With a teacher, a boss or an older person, say こんにちは (konnichiwa).

Did you know?

  • The greeting やっほー (yahhoo) is the same sound people shout toward mountain valleys to hear the echo.

Examples in context

  • やっほー、元気?
    Yahhoo, genki?
    Hey, how are you?
  • ちーっす!今日も暑いね。
    Chiissu! Kyou mo atsui ne.
    Yo! It is hot today too.
  • おっす、久しぶり。
    Ossu, hisashiburi.
    Hey, long time no see.

Example conversation

Rui and her friend Mika meet at a train station.

  1. Rui

    やっほー、ミカ!
    Yahhoo, Mika!
    Hey, Mika!
  2. Mika

    やっほー。待った?
    Yahhoo. Matta?
    Hey. Did you wait long?
  3. Rui

    ううん、今来たところ。
    Uun, ima kita tokoro.
    No, I just got here.
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Patrick Allen
Patrick AllenHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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