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Synonym Nuance VS

How to say "Boil" in Japanese

Both words can translate to "boil", but which should you choose?

Japanese Option A

沸かす

わかす (wakasu)
N4 / CEFR Syllabus
VS
Japanese Option B

煮る

にる (niru)
N3 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "boil" into Japanese, you must choose carefully between 沸かす and 煮る. In Japanese, 沸かす (わかす (wakasu)) is typically associated with "to boil (water), to heat (water)" (Syllabus Level: N4) and represents A transitive verb meaning to heat liquid until it boils. On the other hand, 煮る (にる (niru)) maps to "to boil; to simmer; to cook (in liquid)" (Syllabus Level: N3) and represents Used when cooking food in liquid over heat, such as making stew or soup. 「煮込み料理」. A literal translation of "boil" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "沸かす"
コーヒーを飲むためにお湯を沸かしました。
I boiled water to drink coffee.
Bilingual Context for "煮る"
彼女は野菜を煮てスープを作った。
She boiled the vegetables and made soup.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "コーヒーを飲むためにお湯を沸かしました。" (Meaning: "I boiled water to drink coffee.")
🎉 Correct Answer!

Remember: "沸かす" fits here because it means "to boil (water), to heat (water)" in the context of: "I boiled water to drink coffee.". "煮る" represents "to boil; to simmer; to cook (in liquid)".

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