Meaning & usage
だって is a colloquial conjunction used to give a reason, similar to saying "because" in casual speech. It follows sentences or clauses directly and is common in spoken, informal conversation rather than formal writing.
Example sentences 8
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iPhoneはインターネットにとって死神なんだって。
Apparently "the iPhone sounds the death knell for the Internet."
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ね、ね、あの店、ニューオープンだって!よってみない?
Look! That shop's just opened! Why not take a look?
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頭はいいとしても、彼だって間違っているかもしれない。
Granted his cleverness, he may still be mistaken.
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彼に金を貸したらダメだってことを分かっていようものを。
You should have known better than to lend him money.
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深夜2時に寝たんだって?今日眠そうなのも当然だね。
You went to bed at 2 o'clock in the morning? No wonder you look sleepy today.
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彼は歌もうまいが、ギターだって同じくらい上手だ。
His singing is very good, but he plays the guitar just as well.
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君は町中の笑いものだっていうことを知らないのか。
Don't you know that you are the laughingstock of the whole town?
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君に会うことは、いつだってとてもうれしいことだ。
To see you is always a great pleasure.