蔓延

• ピンイン: màn yán
• 漢字の分解: 蔓 = 艹 (grass/plant) + 曼 (spread, extend); 延 = 廴 (walk) + 正 (upright, phonetic)

意味

（悪いものが）広がる、蔓延する

Typically used for wildfires, diseases, emotions, conflicts, or ideologies spreading outward. Carries a sense of slow but inexorable expansion that is difficult to contain. Common in news reports, academic analysis, and literary description.

例文

1. 山林大火在强风助势下迅速蔓延，消防部门紧急调派增援力量赶赴现场。
2. 恐慌情绪开始在市场中蔓延，多只股票触及跌停，投资者纷纷抛售。
3. 若不及时采取有效措施，谣言一旦在网络上蔓延，将很难在短时间内消除影响。

使い方ガイド

場面: news, disaster, disease, conflict

トーン: negative

正しい言い方

• 疫情如果不加以控制，很快就会蔓延至周边地区。(If the epidemic is not controlled, it will quickly spread to surrounding areas.)
• 不满情绪在员工中悄悄蔓延，管理层决定召开全员大会加以沟通。(Discontent quietly spread among employees, and management decided to hold an all-staff meeting to address it.)

避ける言い方

• 把'蔓延'用于正面积极的扩散场景 — 正面语境中扩散应用'传播'或'推广' (Avoid using 蔓延 for positive forms of spreading — for positive diffusion use 传播 or 推广 instead)

起源と歴史

蔓 (creeping vine, to spread) + 延 (to extend, to continue). Together depicting the spreading pattern of climbing vines.

文化的背景

世代: All ages

社会的背景: Universal