How to Say “Hi” in Japanese Writing

やあ
yāhiragana, casual
In writing, a casual "hi" is やあ (yā) in hiragana. A written ハイ (hai) in katakana is from English "hi" and can be mistaken for はい (hai), "yes". It is also called おっす (ossu).
Meaning: casual greeting (phrase)

Ways to say it

“hi” in Japanese
Japanese Romanization Note
やあ yā hiragana, casual
ハイ hai katakana, loanword
おっす ossu hiragana, very casual

In text messages, やっほー (yahhō) is common, with a long vowel mark ー. The mark ー lengthens the vowel in katakana and in informal hiragana.

What mistakes should you avoid?

The Japanese はい (hai) means "yes", so it is not a greeting.

Did you know?

  • Japanese has three scripts and a single message can mix hiragana, katakana and kanji.

Examples in context

  • やあ、元気?
    Yā, genki?
    Hi, how are you?
  • やっほー、今どこ?
    Yahhō, ima doko?
    Hi, where are you now?

Example conversation

Mei and Sora exchange text messages.

  1. Mei

    やっほー!
    Yahhō!
    Hi!
  2. Sora

    やあ、どうしたの?
    Yā, dō shita no?
    Hi, what is up?
  3. Mei

    今日会える?
    Kyō aeru?
    Can we meet today?
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Geraldine Lillie
Geraldine LillieHelp 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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