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Synonym Nuance VS

How to say "Once in a lifetime" in Japanese

Both words can translate to "once in a lifetime", but which should you choose?

Japanese Option A

一期一会

いちごいちえ (ichigoichie)
C1 / CEFR Syllabus
VS
Japanese Option B

千載一遇

せんざいいちぐう (senzaiichiguu)
C1 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "once in a lifetime" into Japanese, you must choose carefully between 一期一会 and 千載一遇. In Japanese, 一期一会 (いちごいちえ (ichigoichie)) is typically associated with "once-in-a-lifetime encounter" (Syllabus Level: C1) and represents Essential structural term in CEFR C1 vocabulary syllabus.. On the other hand, 千載一遇 (せんざいいちぐう (senzaiichiguu)) maps to "once-in-a-lifetime opportunity" (Syllabus Level: C1) and represents Essential structural term in CEFR C1 vocabulary syllabus.. A literal translation of "once in a lifetime" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "一期一会"
私は一期一会に興味があります。
I am interested in once-in-a-lifetime encounter.
Bilingual Context for "千載一遇"
私は千載一遇に興味があります。
I am interested in once-in-a-lifetime opportunity.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "私は ___ に興味があります。" (Meaning: "I am interested in once-in-a-lifetime encounter.")
🎉 Correct Answer!

Remember: "一期一会" fits here because it means "once-in-a-lifetime encounter" in the context of: "I am interested in once-in-a-lifetime encounter.". "千載一遇" represents "once-in-a-lifetime opportunity".

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