How to Say “Y” in Japanese

y
In Japanese, y is a shortened, informal way of asking why, used primarily in text messaging and online chat.
In digital communication, y acts as a shorthand for the question 'why'.

Did you know?

  • Japanese has no single word for 'why' that is neutral in all contexts. Depending on the word chosen, the speaker can sound accusing, curious or purely logical.
  • Using y in a professional email or a message to a superior would be seen as a significant breach of etiquette, as it ignores the strict levels of politeness required in Japanese society.

Examples in context

  • 原点を中心とする半径2の円と,直線 y = x − 1 の交点を求めよ。
    Consider a circle of radius 2 centered at the origin. Find its points of intersection with the line y = x – 1.
    This sentence shows the use of y in a mathematical equation involving a line.
    Tatoeba #2715448 by tommy_san, translation #10068732 by tsp_2
  • 放物線 y=x²−4x+7 をx軸方向に3,y軸方向に−2だけ平行移動して得られる放物線の方程式を求めよ。
    Let's find the equation that shifts the parabola y=x²−4x+7 three spaces on the x-axis and -2 spaces on the y-axis.
    This sentence shows the use of y in a mathematical equation involving a parabola.
    Tatoeba #4908371 by tommy_san, translation #4922087 by gustonrankin

Example conversation

Yui and Ren are texting each other about a cancelled plan.

  1. 蓮 Ren

    明日、行けなくなった。
    Ashita, ikenaku natta.
    I can't go tomorrow anymore.
  2. 結衣 Yui

    y?
    y?
    Why?
  3. 蓮 Ren

    急に用事ができたから。
    Kyuu ni youji ga dekita kara.
    Because something came up suddenly.
  4. 結衣 Yui

    そっか。了解!
    Sokka. Ryoukai!
    I see. Got it!

Sources

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Juanita Isabella
Juanita IsabellaHelp 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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