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How to say "Moment" in Japanese

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

Japanese Option A

刹那

せつな (setsuna)
N1 / CEFR Syllabus
VS
Japanese Option B

いったん

いったん (ittan)
B2 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "moment" into Japanese, you must choose carefully between 刹那 and いったん. In Japanese, 刹那 (せつな (setsuna)) is typically associated with "moment, instant, split second; transient, ephemeral" (Syllabus Level: N1) and represents Often used to describe something that happens very quickly, or something fleeting and brief. Can be used as a noun or an adverb. On the other hand, いったん (いったん (ittan)) maps to "for a moment, once" (Syllabus Level: B2) and represents Essential structural term in CEFR B2 vocabulary syllabus.. A literal translation of "moment" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "刹那"
人生は刹那のように儚い。
Life is as transient as a fleeting moment.
Bilingual Context for "いったん"
私はいったんに興味があります。
I am interested in for a moment, once.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "人生は ___ のように儚い。" (Meaning: "Life is as transient as a fleeting moment.")
🎉 Correct Answer!

Remember: "刹那" fits here because it means "moment, instant, split second; transient, ephemeral" in the context of: "Life is as transient as a fleeting moment.". "いったん" represents "for a moment, once".

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