Use 'no sei de' to identify the cause of a negative outcome, often implying blame.
Word in 30 Seconds
- Used to express negative causes for unwanted outcomes.
- Connects to nouns, verbs, and adjectives in plain form.
- Often implies blame or dissatisfaction with a situation.
使用パターン:名詞+のせいで、動詞(普通形)+のせいで、い形容詞(普通形)+のせいで、な形容詞(語幹+な)+のせいで、という形をとります。また、文末で「〜のせいだ」と断定することも可能です。
- 1一般的な文脈:日常会話からビジネスシーンまで幅広く使われますが、基本的に「ネガティブな結果」に対してのみ使用されます。例えば「雨のせいで遠足が中止になった」のように、自分の意志ではどうにもならない状況や、他人の行動によって不利益を被った場合によく使われます。
- 1類語との比較:『〜おかげで』はポジティブな結果に対して使われる対義語です。また、『〜ために』は中立的で、良い結果にも悪い結果にも使えますが、『〜のせいで』は明確に責任や非難のニュアンスを含みます。そのため、目上の人に対して使うと失礼になる場合があるため注意が必要です。
Examples
雨のせいで、試合が中止になった。
everydayBecause of the rain, the game was canceled.
不注意のせいで、大きな失敗をしてしまいました。
formalDue to carelessness, I made a big mistake.
あいつのせいで、全部台無しだよ。
informalIt's all ruined because of him.
システムの不具合のせいで、データが消失した。
academicDue to a system bug, the data was lost.
Common Collocations
Common Phrases
〜のせいにする
to blame someone
誰のせいでもない
it is no one's fault
Often Confused With
Used for positive outcomes. It expresses gratitude for the cause.
Neutral cause-effect. Can be used for both positive and negative, and is more formal.
Grammar Patterns
How to Use It
Usage Notes
This particle is strictly for negative consequences. It is highly subjective and often carries a strong emotional charge of blame. Avoid using it in formal writing or when speaking to superiors, as it may sound accusatory.
Common Mistakes
Students often use it for positive situations, which sounds confusing or sarcastic. Another mistake is using it as a direct translation for 'because' in every context. Always check if the outcome is truly negative before selecting this word.
Tips
Use for negative outcomes only
Always ensure you are describing a bad result. If the result is positive, switch to 'okage de'.
Be careful with blame
Using this word can sound like you are blaming someone. Avoid using it with superiors to prevent conflict.
Japanese indirectness
While 'no sei de' is direct, Japanese culture often prefers avoiding explicit blame. Use it sparingly in social settings.
Word Origin
Derived from the noun 'sei' (せい), which refers to fault, blame, or cause. It combines with the particle 'de' to indicate the means or cause of an action.
Cultural Context
In Japanese society, explicitly blaming others is often considered impolite. 'No sei de' is a direct way to express frustration, so it is often replaced by more indirect expressions in polite society.
Memory Tip
Think of 'Sei' as 'Say' (blame). If you 'say' it's someone's 'sei', you are blaming them for a bad result.
Frequently Asked Questions
4 questions「〜ために」は良い結果にも悪い結果にも使えますが、「〜のせいで」は悪い結果のみに使います。また、「〜のせいで」は責任や非難のニュアンスが強くなります。
避けたほうが無難です。「〜のせいで」は誰かの責任を強調するため、失礼に聞こえる可能性があります。目上の人には「〜のおかげで」や「〜のせいで」を使わず、「〜ため」などを使いましょう。
いいえ、できません。良い結果に対して使う場合は「〜のおかげで」という表現を使用してください。
「〜のせいで」は文中で原因を示すために使い、「〜のせいだ」は文末で結論として原因を断定する際に使います。
Test Yourself
寝坊した___、会議に遅刻してしまった。
遅刻というネガティブな結果なので「のせいで」が適切です。
Score: /1
Summary
Use 'no sei de' to identify the cause of a negative outcome, often implying blame.
- Used to express negative causes for unwanted outcomes.
- Connects to nouns, verbs, and adjectives in plain form.
- Often implies blame or dissatisfaction with a situation.
Use for negative outcomes only
Always ensure you are describing a bad result. If the result is positive, switch to 'okage de'.
Be careful with blame
Using this word can sound like you are blaming someone. Avoid using it with superiors to prevent conflict.
Japanese indirectness
While 'no sei de' is direct, Japanese culture often prefers avoiding explicit blame. Use it sparingly in social settings.
Examples
4 of 4雨のせいで、試合が中止になった。
Because of the rain, the game was canceled.
不注意のせいで、大きな失敗をしてしまいました。
Due to carelessness, I made a big mistake.
あいつのせいで、全部台無しだよ。
It's all ruined because of him.
システムの不具合のせいで、データが消失した。
Due to a system bug, the data was lost.
Related Content
This Word in Other Languages
Related Vocabulary
More general words
能力
A1Nouryoku refers to the mental or physical power, skill, or capacity required to perform a specific task or function. It can describe both innate talent and skills acquired through learning and practice.
異常
A1A word used to describe something that deviates from the normal state, standard, or expected pattern. It often implies a problem, malfunction, or an extraordinary occurrence that requires attention or investigation.
~について
A2About, concerning; indicates topic.
〜について
B1About, concerning; on the subject of.
~ぐらい
A2about, approximately
ぐらい
A2About; approximately; to the extent of.
ごろ
A2About, approximately (time).
うえ
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絶対
B1Absolutely; definitely; never.
絶対に
B1Absolutely; definitely.