自明

• 読み: じめい
• ローマ字: jimei
• 漢字の分解: 自 (ji/shi/mizuka) — self, oneself; 明 (mei/aka) — bright, clear
• 発音: /dʑi.meː/

意味

Self-evident; obvious; axiomatic. Something that needs no proof or explanation.

A na-adjective and noun describing something so obvious that it requires no further explanation or proof. Common in academic and logical contexts, especially in the phrase 自明のこと (self-evident matter) or 自明の理 (self-evident truth). In mathematics, 自明 is used as a technical term meaning 'trivial.' More formal and intellectual than 明らか (clear, obvious).

例文

1. それは自明のことであり説明の必要がない。
2. 健康が大切だということは自明の理だ。
3. 自明な結論に至るまでに長い議論が必要だった。

使い方ガイド

場面: academic, logic, argument

トーン: academic

起源と歴史

From Chinese 自明. 自 (ji) means 'self' and 明 (mei) means 'bright, clear.' Literally 'self-illuminating' — something that is clear by its own nature without external explanation.

文化的背景

時代: Pre-modern

世代: All ages

社会的背景: Academic/Professional