Explanation
Indicates that something or someone caused an unfortunate result.
Formation
Verb-casual + せいで, い-Adjective + せいで, な-Adjective + なせいで, Noun + のせいで
Detailed explanation
The ～せいで grammar point is used to express that something or someone is the reason or cause of an unfortunate result or situation. It can be translated as 'because of' or 'due to' in English.
Examples
Ame no sei de shiai ga chuushi ni narimashita.
The game was cancelled because of the rain.
Kare no chikoku no sei de, minna matasaremashita.
Everyone had to wait because of his lateness.
Byouki no sei de kyuujitsu ga dainashi ni natta.
My holiday was ruined due to illness.
Shigoto ga isogashikute nebusoku na sei de, shuuchuu dekinai.
I can't concentrate because I'm sleep-deprived due to busy work.
Practice
Grammar content sourced from hanabira.org.