だったけど

was, but

→ だ
phrase Rare #27,939
was, but A casual way to connect a past statement to a contrast; it can also mean “although it was.”
JA: 雨だったけど、散歩に行った。
EN: It was raining, but I went for a walk.

匿名だったけど読んだぞ

It was anonymous, but I read it.

— マレーナ (2000)

でも彼を送ったときもう真夜中だったけど

But it was already midnight when I saw him off, though.

— Article 15 (2019)

モントリオールはダメだったけど―あれはマジでつまらない話をしたからよ

Montreal didn’t work out—but that’s because I told a really boring story.

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)

〈だったけど…〉

…but it was.

— 映画 聲の形 (2016)

出てきたのは竹じゃなくて電柱だったけどあんたもしやかぐや姫なの?

What came out wasn’t bamboo but a utility pole. Are you, by any chance, Princess Kaguya?

— Cosmic Princess Kaguya! (2026)