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synonym Comparative
流布
VS
蔓延る

Differences Between "流布" and "蔓延る"

Option A
流布
Meaning
circulation, spread, diffusion (of rumors, news, ideas)
Reading
るふ (rufu)
Syllabus Level
N1
Practical Example
そのデマはあっという間にSNSで流布した。
That baseless rumor quickly spread on social media.
Option B
蔓延る
Meaning
to spread; to thrive; to infest (often in a negative sense)
Reading
はびこる (habikoru)
Syllabus Level
N1
Practical Example
悪い噂が社内に蔓延っている。
Bad rumors are spreading throughout the company.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(circulation, spread, diffusion (of rumors, news, ideas))"?
🎉 正解 / Correct!
使い分け解説:
- 流布: Refers to information, rumors, or ideas spreading widely among people. Often used for abstract concepts rather than physical objects. (情報や噂、思想などが世間に広く広まること。)
- 蔓延る: 雑草が伸びるように、望ましくないもの(悪習、病気、デマなど)が広がる様子を表す。負のニュアンスが強い。Describes undesirable things (bad habits, diseases, rumors, etc.) spreading like weeds, carrying a strong negative connotation.
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