一晩中起きて

be awake all night

→ 1晩
phrase Rare #34,050
be awake all night Often used with a following verb to describe what someone does while awake all night.
JA: 一晩中起きて本を読んでいた。
EN: I was awake all night reading a book.

私はほぼ一晩中起きていた。

I was awake almost all night.

母親は一晩中起きて息子を待った。

The mother stayed up all night waiting for her son.

昨日の夜はほとんど一晩中起きていた。

I was awake almost all night last night.

自分たちが言ったことを、一晩中起きて考えてたんだ。

I stayed up all night thinking about what we had said.

一晩中起きて料理をしているのよ

I've been up all night cooking.

— 道 (1954)