一昨昨年(いっさくさくねん)

いっさくさくねん
noun
three years ago; the year before the year before last
formaltime-general
1. three years ago; the year before the year before last
More formal equivalent of 三年前(さんねんまえ). Used in written and formal spoken contexts.
一昨昨年(いっさくさくねん)の夏(なつ)だった。
It was the summer three years ago.
一昨昨年(いっさくさくねん)から計画(けいかく)していた旅行(りょこう)だ。
It's a trip we'd been planning since three years ago.
一昨昨年(いっさくさくねん)の売上(うりあげ)と比較(ひかく)すると、大幅(おおはば)に増加(ぞうか)している。
Compared to sales from three years ago, there has been a significant increase.

A formal time expression for "three years ago." Follows the pattern of 一昨年(おととし) (two years ago) by adding another 昨(さく) prefix. In everyday conversation, 三年前(さんねんまえ) is far more common.

Related time words

Usage

Primarily appears in formal writing such as reports, articles, and official documents. In speech, speakers almost always use 三年前(さんねんまえ) instead.

Related Words

Related: 去年(きょねん) (last year)
Related: 一昨年(いっさくねん) (two years ago)
Related: 一昨昨日(さきおととい) (three days ago)
general
Added 2026.5.4 20:18 · Revised 2026.9.2 13:02
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