多かった

was numerous, were many

→ 多い
多かっ Continuative form + た Past tense
adjective · past tense Uncommon #16,114
was numerous, were many Past form of 多い.
JA: 今日は人が多かった。
EN: There were a lot of people today.
Forms of 多い

聴衆はとても多かった。

There was a very large audience.

コンサートの聴衆は多かった。

There was a large audience at the concert.

会への出席者は予想されていたよりも多かった。

There were more people at the meeting than expected.

観客はすごく多かったよ。

There were a lot of spectators.

不満を抱く部下も多かった。

Many subordinates were dissatisfied as well.

寄付されたものも多かったわ

A lot of it was donated, too.

— ダーク・プレイス (2015)

今日の授業を欠席した学生は多かった。

Many students were absent from class today.

変装していた彼に気づかなかった人も多かった。

Many people didn't realize it was him in disguise.

会の出席者は多かった。

There were many people at the meeting.

私の「臨時」は、ほかの人よりちょっと多かったけれど。

I had a few more temporary jobs than other people, though.

負傷者は多かったが、行方不明の人はほとんどいなかった。

There were many injured people, but hardly anyone was missing.

実のところ、帆というより裂け目のほうが多かった。

In fact, there were more tears than sails.

そこって、女の人多かった?

Were there a lot of women there?