一昨晩(いっさくばん)

いっさくばん
noun
the night before last
1. the night before last
The evening or night of the day before yesterday. A formal, largely written word; in speech people usually say おとといの晩(ばん) or おとといの夜(よる).
一昨晩(いっさくばん)、雨(あめ)が降(ふ)った。
It rained the night before last.
一昨晩(いっさくばん)から熱(ねつ)が続(つづ)いている。
I've had a fever since the night before last.
一昨晩(いっさくばん)の会議(かいぎ)で決(き)まったことを、今朝(けさ)全員(ぜんいん)にメールで知(し)らせた。
This morning I emailed everyone about what was decided at the meeting the night before last.

REGISTER:
Formal and mostly written — news reports, police statements, and business correspondence. In conversation おとといの晩(ばん) is the natural choice.

RELATED TIME WORDS:

  • 昨晩(さくばん): last night
  • 今晩(こんばん): tonight
  • 一昨日(おととい): the day before yesterday
  • 一昨年(おととし): the year before last

The prefix 一昨(いっさく) means "one before last" and appears in a small closed set of time words.

Related Words

Related: 昨晩(さくばん)
Related: 一昨日(おととい)
general
Added 2026.8.4 15:26
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