long since

Adverb

idiomatic not-comparable

(idiomatic) Long ago; in the (distant) past.

Japanese Meaning

ずっと昔、はるか昔、遠い昔を意味する表現です。 / 物事が非常に昔のことであることを示します。

I had long since given up hoping for news when the letter finally arrived.

手紙がようやく届いたとき、私はずっと前に知らせを期待するのを諦めていた。

Sense（1）

(idiomatic) Long ago; in the (distant) past.

I don't know why he asked me to do that, when I had long since finished it.