せいかじ字FuriganaMeanings1expressionit may be because; perhaps becauseExpresses a tentative reason or cause, often with a sense of uncertainty or speculation. Commonly used in casual speech and writing.彼かれが遅おくれたのは、電でん車しゃが遅おくれたせいか。Perhaps he was late because the train was delayed.最さい近きん疲つかれやすいのは、年としのせいか。Maybe I get tired easily lately because of my age.
