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Japanese vocabulary · Beginner
How do you say "reaction" in Japanese?
反応
hannou
In Japanese, "reaction" is 反応 (hannou).
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Pronunciation
Hannou has a nasal double n, han, held briefly before flowing into a long nou, so slow down on that second half.
Writing and usage
反応 is written using kanji. It's a noun, and this word is also taught inside the Noun Town language learning game, where it appears in interactive lessons alongside hundreds of other everyday words.
Example sentence
二つを混ぜると、泡立ちが起きた。
futatsu wo maze ruto, awadachi ga oki ta.
Mixing the two caused a fizzy reaction.
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How to remember 反応
Hannou ends in 'nou', sounding like 'no', the surprised reaction you might have watching two chemicals suddenly fizz.
Related words
- gravity 重力 juuryoku
- energy エネルギー enerugii
- electricity 電気 denki
- magnet マグネット magunetto
- chemical 化学的 kagakuteki
- oxygen 酸素 sanso
- carbon カーボン kaabon
- hydrogen 水素 suiso
- molecule 分子 bunshi
Browse all Japanese words in the glossary.
Questions about 反応
How do you pronounce 反応?
Hannou has a nasal double n, han, held briefly before flowing into a long nou, so slow down on that second half.
Is 反応 formal or casual?
反応 is a neutral, everyday word that works in both casual and polite speech. The level of formality comes from the sentence structure around it, not from the word itself.
How is 反応 written in Japanese?
反応 is written using kanji. Romanised, it reads as hannou.
Where can I practice Japanese words for free?
You can play free Japanese minigames in your browser on the Noun Town online games page, with no sign-up needed. Every word in the Japanese glossary also has native audio and an example sentence you can revisit any time.
"Reaction" in other languages
Curated by Callan Ratcliffe
This word is part of the vocabulary taught in the Japanese language learning game Noun Town, where words are introduced through play rather than memorisation. Want to play the full game? Get Noun Town on Steam.
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