すんだ

was finished, was over

→ 済む
すん be finished, be completed + Plain copula
verb · past indicative Rare #30,625
was finished, was over Usually written as 済んだ.
JA: 仕事がやっとすんだ。
EN: The work was finally finished.
Conjugation of 済む

若い僕らはこういう言い方すんだ

This is how young people like us say it.

すんだことは水に流せ

Let bygones be bygones.

演奏会すんだときに聴衆は拍手した

When the concert ended, the audience applauded.

その話はすんだ

That matter is settled.

— ザ・マン・フロム・アース (2007)

彼は警告すんだ

He got off with a warning.

すんだんだ

It’s over.

— 東京物語 (1953)