来なかったの

didn't come

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phrase Rare #23,446
didn't come The ending の can add an explanatory tone or make a question sound more conversational.
JA: どうして昨日来なかったの?
EN: Why didn't you come yesterday?

何故来なかったの?

Why didn’t you come?

なんでバスで来なかったの?

Why didn’t you come by bus?

じゃぁ、なんで来なかったの?

Then why didn’t you come?

私たちと一緒にトムも来るはずだったんだけど、トム来なかったの。

Tom was supposed to come with us, but he didn't show up.

なぜ一緒に来なかったの?

Why didn’t you come with me?

— 甘い生活 (1960)

どうして空港に来なかったの?

Why didn’t you come to the airport?

— 甘い生活 (1960)

私達さ、トムを待ってたのに来なかったのよ。

We were waiting for Tom, but he never showed up.

昨日はどうして学校に来なかったの?

Why didn't you come to school yesterday?

昨日のパーティーなんで来なかったの?

Why didn’t you come to the party yesterday?