要因

• 読み: よういん
• ローマ字: youin
• 漢字の分解: 要 (you) — essential, important; 因 (in) — cause, factor
• 発音: /jo.ɯ.iɴ/

意味

Main cause; primary factor. A key element contributing to a result or outcome.

A noun used in analytical or explanatory contexts to identify the primary contributing factors behind an event, trend, or outcome. More formal and precise than 原因 (general cause), 要因 emphasises that something is a significant or essential factor among potentially many. Frequently used in news, academic writing, and business analysis.

例文

1. 事故の要因はまだ調査中だ。
2. 成功の要因は努力だけではない。
3. 経済成長の要因を分析する必要がある。

使い方ガイド

場面: analysis, news, academics, business

トーン: analytical

起源と歴史

From Sino-Japanese 要 (you, essential/important) + 因 (in, cause/factor). Together: 'essential cause' — a primary or key factor behind something.

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal