How to Say “Big Brother” in Japanese Anime

お兄ちゃん
onii-chananime, affectionate
In anime a younger sibling most often says お兄ちゃん (onii-chan) to a big brother. It is warm and childlike. 兄さん (nii-san) is more respectful and 兄貴 (aniki) sounds rough.
Meaning: older brother (phrase)

Ways to say it

“big brother” in Japanese
Japanese Romanization Note
お兄ちゃん onii-chan anime, affectionate
兄さん nii-san respectful
兄貴 aniki casual, tough

お兄ちゃん (onii-chan) is used as a name for the brother when speaking to him. 兄さん (nii-san) fits a serious or grown-up character. 兄貴 (aniki) is also used by gang members for a senior man.

How does it change in a sentence?

The ending ちゃん (chan) is affectionate and さん (san) is polite. The same pattern is used with older sisters.

Did you know?

  • In Japan the same word お兄ちゃん (onii-chan) is also used in real families, not only in anime.

Examples in context

  • 兄さん、ありがとう。
    Nii-san, arigatō.
    Thank you, big brother.
  • 兄貴についていきます。
    Aniki ni tsuite ikimasu.
    I will follow you, boss.

Example conversation

In a school anime scene, Yuki runs after her older brother Takumi.

  1. Yuki

    お兄ちゃん、待って!
    Onii-chan, matte!
    Big brother, wait!
  2. Takumi

    どうしたの?
    Dōshita no?
    What is wrong?
  3. Yuki

    一緒に帰ろう。
    Issho ni kaerō.
    Let us go home together.
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Eva Cynthia
Eva CynthiaHelp 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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