How to Say “Hello Big Brother” in Japanese

こんにちは、お兄さん
konnichiwa, oniisan
The English phrase "hello big brother" is translated into Japanese as こんにちは、お兄さん (konnichiwa, oniisan).
This phrase is a greeting used to address an older brother or a slightly older male acquaintance. The term お兄さん (oniisan) can be used to address a male stranger who appears to be a young man, even if there is no biological relation.

Which one should you use?

While お兄さん (oniisan) is used to address or talk about an older brother politely, 兄 (ani) is the humble form used when speaking to someone outside the family about one's own brother.

How do you pronounce it?

konnichiwa, oniisan

Did you know?

  • In certain traditional Japanese contexts, お兄さん (oniisan) can be used as a polite term for a male apprentice or a senior colleague in a craft or trade.
  • In Japanese pop culture, such as anime, a character might use the much more masculine and rough 兄貴 (anikii) instead of お兄さん (oniisan) to show a 'tough' or 'brotherly' bond.
  • While お兄さん (oniisan) is the polite form, a younger sibling might use the more casual お兄ちゃん (oniichan) to express affection and closeness.

Examples in context

  • あ、こんにちは、お兄さん!元気だった?
    A, konnichiwa, oniisan! Genki datta?
    Ah, hello, big brother! Have you been well?
  • こんにちは、お兄さん。ちょっといいですか?
    Konnichiwa, oniisan. Chotto ii desu ka?
    Hello, big brother. Do you have a moment?

Example conversation

Yui sees her brother Kenta in the hallway.

  1. 結衣 Yui

    こんにちは、お兄さん。
    Konnichiwa, onīsan.
    Hello, big brother.
  2. 健太 Kenta

    やあ、結衣。どうしたの?
    Yā, Yui. Dō shita no?
    Hey, Yui. What's up?
  3. 結衣 Yui

    お腹が空いたので、一緒にご飯に行きましょう。
    Onaka ga suita node, issho ni gohan ni ikimashō.
    I'm hungry, so let's go eat together.
  4. 健太 Kenta

    いいよ。行こうか。
    Ii yo. Ikō ka.
    Sure. Shall we go?
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Pearl Wanda
Pearl WandaHelp 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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