昨

• 読み: さく
• ローマ字: saku
• 漢字の分解: 昨 (saku/sa) — yesterday, previous
• 発音: /sa.kɯ/

意味

Last; previous; yesterday. A prefix attached to time words to indicate the immediately preceding period.

A prefix used before time nouns to mean 'last' or 'previous.' Common combinations: 昨日 (yesterday, also read きのう), 昨年 (last year), 昨夜 (last night). More formal than alternatives like 去年 (last year). Primarily used in written and formal contexts.

例文

1. 昨年の冬はとても寒かった。
2. 昨夜はよく眠れなかった。
3. 昨日の会議で大事なことが決まった。

使い方ガイド

場面: written language, news, formal speech

トーン: neutral

起源と歴史

The kanji 昨 combines 日 (day, sun) and 乍 (phonetic element suggesting 'while' or 'during'). Originally meant 'yesterday' in Chinese, later extended as a prefix for any immediately preceding time period.

文化的背景

時代: Ancient

世代: All ages

社会的背景: Universal