What it means
んだって reports information the speaker heard from another source, meaning “I hear that” or “they say that.” It is an informal form made from んだ plus って, and it often sounds conversational or slightly detached from the speaker’s own knowledge. The reported clause comes before んだって. A polite equivalent is んだそうです.
Usage note
んだって is casual and should generally be replaced with んだそうです in formal or polite situations. Do not confuse this use of って with the quotation particle or the topic marker; context determines the meaning.
How to use it
彼は医者なんだそうです。
I hear that he is a doctor.
この公園は静かなんだそうです。
I hear that this park is quiet.
この店の料理は辛いんだそうです。
I hear that the food at this restaurant is spicy.
田中さんは来月京都へ引っ越すんだそうです。
I hear that Mr. Tanaka is moving to Kyoto next month.
彼は医者なんだって。
I hear that he is a doctor.
この公園は静かなんだって。
I hear that this park is quiet.
この店の料理は辛いんだって。
I hear that the food at this restaurant is spicy.
田中さんは来月京都へ引っ越すんだって。
I hear that Mr. Tanaka is moving to Kyoto next month.
Example sentences
来月から駅前の工事が始まるんだって。
I hear that construction in front of the station will begin next month.
図書館は来週から改修のため休館するんだって。
I hear that the library will be closed for renovations starting next week.
山田さんは来年海外へ転勤するんだって。
I hear that Yamada will be transferred overseas next year.
この店の弁当