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Synonym Nuance VS

How to say "Harden" in Japanese

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

Japanese Option A

固める

かためる (katameru)
N3 / CEFR Syllabus
VS
Japanese Option B

心を鬼にする

こころをおににする (kokorowo oninisuru)
B2 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "harden" into Japanese, you must choose carefully between 固める and 心を鬼にする. In Japanese, 固める (かためる (katameru)) is typically associated with "to harden; to solidify; to strengthen; to consolidate (a plan/resolve)" (Syllabus Level: N3) and represents 物理的に硬くする意味や、決意や方針などを確実にする意味で使われる他動詞です。. On the other hand, 心を鬼にする (こころをおににする (kokorowo oninisuru)) maps to "to harden one's heart" (Syllabus Level: B2) and represents Essential structural term in CEFR B2 vocabulary syllabus.. A literal translation of "harden" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "固める"
チームの勝利のために、みんなで決意を固めた。
To win for the team, everyone firmed up their resolve together.
Bilingual Context for "心を鬼にする"
毎日、日本語を練習するために心を鬼にする。
Every day, I harden one's heart to practice Japanese.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "チームの勝利のために、みんなで決意を固めた。" (Meaning: "To win for the team, everyone firmed up their resolve together.")
🎉 Correct Answer!

Remember: "固める" fits here because it means "to harden; to solidify; to strengthen; to consolidate (a plan/resolve)" in the context of: "To win for the team, everyone firmed up their resolve together.". "心を鬼にする" represents "to harden one's heart".

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