遡及

• 読み: そきゅう
• ローマ字: sokyuu
• 漢字の分解: 遡 (so) — go upstream, trace back; 及 (kyū) — reach, extend to
• 発音: /so.kʲɯː/

意味

Tracing back; retroaction; retrospection. The act of going back to an earlier point in time, often to apply a rule or examine an origin retrospectively.

A noun often used in legal and administrative contexts as 遡及する (sokyū suru — to apply retroactively). The phrase 遡及効 (sokyūkō) means 'retroactive effect.' In literary or historical scholarship, it describes tracing a text, idea, or tradition back to its origins. Also written 溯及. The imagery of going upstream against a current conveys the effort required to recover the past.

例文

1. この法律は公布前の行為には遡及しない旨が明記されている。
2. 伝統の遡及を試みると、意外な外来の影響が見えてくる。
3. 遡及調査によって、誤りが十年前から続いていたことが判明した。

使い方ガイド

場面: law, history, academic research

トーン: analytical

起源と歴史

From 遡 (so — to go upstream, to trace back) and 及 (kyū — to reach, to extend to). The image of swimming upstream to reach the source is a vivid metaphor for retrospective inquiry into origins or causes.

文化的背景

時代: Modern

世代: Lawyers, scholars

社会的背景: Academic