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Synonym Nuance VS

How to say "Uncertain" in Japanese

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

Japanese Option A

不確かな

ふたしかな (futashika na)
N3 / CEFR Syllabus
VS
Japanese Option B

おぼつかない

おぼつかない (obotsukanai)
N2 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "uncertain" into Japanese, you must choose carefully between 不確かな and おぼつかない. In Japanese, 不確かな (ふたしかな (futashika na)) is typically associated with "uncertain, unreliable" (Syllabus Level: N3) and represents Used as a な-adjective to directly modify a noun, describing something. On the other hand, おぼつかない (おぼつかない (obotsukanai)) maps to "uncertain, unreliable, shaky, unsteady, doubtful, precarious" (Syllabus Level: N2) and represents Describes a state of being unstable, unsteady, or unreliable, often with a sense of anxiety or doubt about the outcome. Can refer to physical balance, a future prospect, or someone's ability.. A literal translation of "uncertain" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "不確かな"
私は不確かな記憶をたよりに証言した。
I testified based on an uncertain memory.
Bilingual Context for "おぼつかない"
老いた祖父は、足元がおぼつかない様子で歩いていた。
My elderly grandfather walked with unsteady steps.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "私は ___ 記憶をたよりに証言した。" (Meaning: "I testified based on an uncertain memory.")
🎉 Correct Answer!

Remember: "不確かな" fits here because it means "uncertain, unreliable" in the context of: "I testified based on an uncertain memory.". "おぼつかない" represents "uncertain, unreliable, shaky, unsteady, doubtful, precarious".

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