What does だって mean?
だって is a Japanese conjunction meaning “because (casual)” in English. It can also be translated as “even” depending on context. It is written as だって in hiragana, and datte in romaji. This word is part of JLPT N3 vocabulary.
Example sentences
遅れてごめん。だって、電車が止まっていたんだよ。
Sorry I'm late. It's because the trains had stopped.
そんなこと、子供だって知っているよ。
Even a child knows that.