Synonym Nuance VS
How to say "Spread" in Japanese
Both words can translate to "spread", but which should you choose?
Japanese Option A
普及する
ふきゅうする (fukyuu suru)
N3 / CEFR Syllabus
VS
Japanese Option B
蔓延る
はびこる (habikoru)
N1 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "spread" into Japanese, you must choose carefully between 普及する and 蔓延る.
In Japanese, 普及する (ふきゅうする (fukyuu suru)) is typically associated with "to spread, to become widespread, to popularize, to diffuse" (Syllabus Level: N3) and represents This verb describes something becoming widely known, adopted, or used by many people. It often refers to products, technologies, ideas, or services..
On the other hand, 蔓延る (はびこる (habikoru)) maps to "to spread; to thrive; to infest (often in a negative sense)" (Syllabus Level: N1) and represents 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. A literal translation of "spread" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "普及する"
スマートフォンは世界中に普及した。
Smartphones have become widespread all over the world.
Bilingual Context for "蔓延る"
悪い噂が社内に蔓延っている。
Bad rumors are spreading throughout the company.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "スマートフォンは世界中に普及した。" (Meaning: "Smartphones have become widespread all over the world.")
🎉 Correct Answer!
Remember: "普及する" fits here because it means "to spread, to become widespread, to popularize, to diffuse" in the context of: "Smartphones have become widespread all over the world.". "蔓延る" represents "to spread; to thrive; to infest (often in a negative sense)".