JLPT N3 grammar

せい(で) — Meaning & Examples

"Because of" with NEGATIVE feeling. ALWAYS the result is bad and you're blaming the cause. あなたのせいで = it's your fault. Native ears immediately pick up the complaint tone.

せい — "Because of" (Blame)

せい ALWAYS carries a negative feeling — the result is bad, and you're blaming the cause.

Pattern: [noun/plain form] + せいで

雨のせいで、ピクニックが中止になった。
= Because of the rain, the picnic was cancelled. (annoyed!)

あなたのせいで、失敗した!
= It's your fault I failed!

寝不足のせいで、頭が痛い。
= Because of lack of sleep, my head hurts.

電車が遅れたせいで、遅刻した。
= Because the train was late, I was late.

Variants:
人のせいにするな! = Don't blame other people!

それはわたしのせいじゃない。 = That's not my fault.

Key feature: Even if the cause itself is neutral (like rain), using せい makes it sound like you're COMPLAINING. Native speakers immediately pick up the negative tone.

Practice questions

Try these 3 questions on せい(で). Pick an answer in your head, then open “Show answer”.

  1. 1. Which carries a NEGATIVE feeling (blame)?

    • ため (tame)
    • から (kara)
    • おかげ (okage)
    • せい (sei)
    Show answer

    Answer: せい (sei)

    せい always implies negative outcome with blame. あなたのせいで = it's your fault!

  2. 2. Which carries a POSITIVE feeling (gratitude)?

    • ため (tame)
    • せい (sei)
    • ので (node)
    • おかげ (okage)
    Show answer

    Answer: おかげ (okage)

    おかげ = thanks to (positive). 先生のおかげで = thanks to my teacher.

  3. 3. 雨の___、ピクニックが中止になった — you're ANNOYED:

    • ため (tame)
    • おかげで (okage de)
    • せいで (sei de)
    • ので (node)
    Show answer

    Answer: せいで (sei de)

    せいで = blame / negative feeling. The picnic got cancelled — you're annoyed at the rain.

Practise せい(で) in the free app

This point is part of the “Cause and Effect — ため・せい・おかげ” lesson in A Star Japanese. Study it with examples, a quiz, flashcards and timed JLPT N3 mock exams. Free on iPhone and Android.

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Related N3 grammar points

From the same lesson: Cause and Effect — ため・せい・おかげ

Frequently asked questions

What does せい(で) mean?

"Because of" with NEGATIVE feeling. ALWAYS the result is bad and you're blaming the cause. あなたのせいで = it's your fault. Native ears immediately pick up the complaint tone.

Is せい(で) on the JLPT N3 test?

せい(で) is taught in the JLPT N3 grammar course in A Star Japanese (lesson “Cause and Effect — ため・せい・おかげ”), so it is a pattern learners at this level are expected to recognise. The JLPT does not publish an official grammar list, so treat this as a study guide rather than an official requirement.

How can I practise せい(で)?

Open the “Cause and Effect — ため・せい・おかげ” lesson in the free A Star Japanese app for iPhone and Android. It has examples, a quiz after every lesson, flashcards with spaced repetition and timed JLPT N3 mock exams, with no ads.

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