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N3
〜せいで／〜せいか
Meaning
Expresses that there is an undesirable cause or responsibility behind a result. "〜せいで" identifies the cause specifically with a tone of blame or regret, while "〜せいか" expresses that, though not certain, that may be the cause, with a tone of speculation.
Examples
- 寝不足のせいで、一日中頭が痛かった Because of lack of sleep, I had a headache all day.
- 年のせいか、最近忘れっぽくなった Maybe because of my age, I've become forgetful lately.
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